Wednesday 26 September 2012

Ircon


Generic Name: ferrous fumarate (FER us FUE ma rate)

Brand Names: Feostat, Ferrets, Hemocyte, Ircon, Nephro-Fer


What is Ircon (ferrous fumarate)?

Ferrous fumarate is a type of iron. You normally get iron from the foods you eat. In your body, iron becomes a part of your hemoglobin (HEEM o glo bin) and myoglobin (MY o glo bin). Hemoglobin carries oxygen through your blood to tissues and organs. Myoglobin helps your muscle cells store oxygen.


Ferrous fumarate is used to treat iron deficiency anemia (a lack of red blood cells caused by having too little iron in the body).


Ferrous fumarate may also be used for purposes other than those listed in this medication guide.


What is the most important information I should know about Ircon (ferrous fumarate)?


Before using this medication, tell your doctor if you are allergic to any drugs, or if you have iron overload syndrome, hemolytic anemia (a lack of red blood cells), porphyria (a genetic enzyme disorder that causes symptoms affecting the skin or nervous system), thalassemia (a genetic disorder of red blood cells), kidney or liver disease, if you are an alcoholic, or if you receive regular blood transfusions.


Seek emergency medical attention if you think you have used too much of this medicine, or if anyone has accidentally swallowed it. An overdose of iron can be fatal, especially in a young child.

Overdose symptoms may include drowsiness, severe nausea or stomach pain, vomiting, bloody diarrhea, coughing up blood or vomit that looks like coffee grounds, shallow breathing, weak and rapid pulse, cold or clammy skin, blue lips, and seizure (convulsions).


Take ferrous fumarate on an empty stomach, at least 1 hour before or 2 hours after a meal. Avoid taking antacids or antibiotics within 2 hours before or after taking ferrous fumarate .

Ferrous fumarate is only part of a complete program of treatment that may also include a special diet. It is very important to follow the diet plan created for you by your doctor or nutrition counselor. You should become very familiar with the list of foods you should eat to make sure you get enough iron from both your diet and your medication.


What should I discuss with my healthcare provider before taking Ircon (ferrous fumarate)?


Before using this medication, tell your doctor if you are allergic to any drugs or food dyes, or if you have:



  • iron overload syndrome;




  • hemolytic anemia (a lack of red blood cells);




  • porphyria (a genetic enzyme disorder that causes symptoms affecting the skin or nervous system);




  • thalassemia (a genetic disorder of red blood cells);




  • liver or kidney disease;




  • if you are an alcoholic; or




  • if you receive regular blood transfusions.



If you have any of these conditions, you may not be able to use ferrous fumarate, or you may need a dose adjustment or special tests during treatment.


It is not known whether this medication could be harmful to an unborn baby. Tell your doctor if you become pregnant during treatment. It is not known whether this medicine passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Do not give ferrous fumarate to a child without the advice of a doctor.


How should I take Ircon (ferrous fumarate)?


Use this medication exactly as directed on the label, or as prescribed by your doctor. Do not use it in larger amounts or for longer than recommended.


Take ferrous fumarate on an empty stomach, at least 1 hour before or 2 hours after a meal. Avoid taking antacids or antibiotics within 2 hours before or after taking ferrous fumarate . Take this medication with a full glass of water. Do not crush, chew, or break a ferrous fumarate tablet. Swallow the pill whole. Shake the oral suspension (liquid) well just before you measure a dose. To be sure you get the correct dose, measure the liquid with a marked measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.

Ferrous fumarate can stain your teeth, but this effect is temporary. To prevent tooth staining, mix the liquid form of ferrous fumarate with water or fruit juice (not with milk) and drink the mixture through a straw. You may also clean your teeth with baking soda once per week to treat any tooth staining.


Ferrous fumarate is only part of a complete program of treatment that may also include a special diet. It is very important to follow the diet plan created for you by your doctor or nutrition counselor. You should become very familiar with the list of foods you should eat to make sure you get enough iron from both your diet and your medication.


Store ferrous fumarate at room temperature, away from moisture and heat. Keep the liquid medicine from freezing.

What happens if I miss a dose?


Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.


What happens if I overdose?


Seek emergency medical attention if you think you have used too much of this medicine, or if a child has accidentally swallowed it. An overdose of ferrous fumarate can be fatal to a child.

Overdose symptoms may include drowsiness, severe nausea or stomach pain, vomiting, bloody diarrhea, coughing up blood or vomit that looks like coffee grounds, shallow breathing, weak and rapid pulse, cold or clammy skin, blue lips, and seizure (convulsions).


What should I avoid while taking Ircon (ferrous fumarate)?


Do not take any vitamin or mineral supplements that your doctor has not prescribed or recommended.


Avoid taking an antibiotic medicine within 2 hours before or after you take ferrous fumarate. This is especially important if you are taking an antibiotic such as ciprofloxacin (Cipro), demeclocycline (Declomycin), doxycycline (Adoxa, Doryx, Oracea, Vibramycin), levofloxacin (Levaquin), lomefloxacin (Maxaquin), minocycline (Dynacin, Minocin, Solodyn, Vectrin), norfloxacin (Noroxin), ofloxacin (Floxin), or tetracycline (Brodspec, Panmycin, Sumycin, Tetracap).


Certain foods can also make it harder for your body to absorb ferrous fumarate. Avoid taking this medication within 1 hour before or 2 hours after eating fish, meat, liver, and whole grain or "fortified" breads or cereals.

Avoid using antacids without your doctor's advice. Use only the specific type of antacid your doctor recommends. Antacids contain different medicines and some types can make it harder for your body to absorb ferrous fumarate.


Ircon (ferrous fumarate) side effects


Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor if you have serious side effects such as:

  • bright red blood in your stools; or




  • pain in your chest or throat when swallowing a ferrous fumarate tablet.



Less serious side effects may include:



  • constipation, diarrhea;




  • nausea, vomiting, heartburn;




  • stomach pain, upset stomach;




  • black or dark-colored stools or urine; or




  • temporary staining of the teeth.



This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.


What other drugs will affect Ircon (ferrous fumarate)?


The following drugs can interact with ferrous fumarate. Tell your doctor if you use any of the following:



  • acetohydroxamic acid (Lithostat);




  • cimetidine (Tagamet);




  • deferoxamine (Desferal);




  • etidronate (Didronel);




  • dimercaprol (an injection used to treat poisoning by arsenic, lead, or mercury);




  • penicillamine (Cuprimine); or




  • pancrelipase (Cotazym, Creon, Ilozyme, Pancrease, Ultrase).



This list is not complete and there may be other drugs that can interact with ferrous fumarate. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.



More Ircon resources


  • Ircon Side Effects (in more detail)
  • Ircon Use in Pregnancy & Breastfeeding
  • Ircon Drug Interactions
  • Ircon Support Group
  • 0 Reviews for Ircon - Add your own review/rating


  • Ircon MedFacts Consumer Leaflet (Wolters Kluwer)

  • Ferrous Fumarate MedFacts Consumer Leaflet (Wolters Kluwer)

  • Femiron Advanced Consumer (Micromedex) - Includes Dosage Information

  • Feostat Chewable Tablets MedFacts Consumer Leaflet (Wolters Kluwer)



Compare Ircon with other medications


  • Anemia Associated with Chronic Renal Failure
  • Iron Deficiency Anemia
  • Vitamin/Mineral Supplementation and Deficiency
  • Vitamin/Mineral Supplementation during Pregnancy/Lactation


Where can I get more information?


  • Your pharmacist can provide more information about ferrous fumarate.

See also: Ircon side effects (in more detail)


Scabies Medications


Definition of Scabies: Scabies is a contagious skin disease caused by a very small mite.

Drugs associated with Scabies

The following drugs and medications are in some way related to, or used in the treatment of Scabies. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Learn more about Scabies





Drug List:

Tuesday 25 September 2012

A-Caro-25


Generic Name: beta carotene (Oral route)


bay-ta KAR-oh-teen


Commonly used brand name(s)

In the U.S.


  • A-Caro-25

  • Lumitene

Available Dosage Forms:


  • Capsule

  • Capsule, Liquid Filled

  • Liquid

  • Tablet

Therapeutic Class: Nutritive Agent


Pharmacologic Class: Vitamin A (class)


Uses For A-Caro-25


Vitamins are compounds that you must have for growth and health. They are needed in small amounts only and are usually available in the foods that you eat. Beta-carotene is converted in the body to vitamin A, which is necessary for healthy eyes and skin.


A lack of vitamin A may cause a rare condition called night blindness (problems seeing in the dark). It may also cause dry eyes, eye infections, skin problems, and slowed growth. Your health care professional may treat these problems by prescribing either beta-carotene, which your body can change into vitamin A, or vitamin A for you.


Some conditions may increase your need for vitamin A. These include:


  • Cystic fibrosis

  • Diarrhea, continuing

  • Illness, long-term

  • Injury, serious

  • Liver disease

  • Malabsorption problems

  • Pancreas disease

Increased need for vitamin A should be determined by your health care professional.


Claims that beta-carotene is effective as a sunscreen have not been proven. Although beta-carotene supplements are being studied for their ability to reduce the risk of certain types of cancer and possibly heart disease, there is not enough information to show that this is effective.


Beta-carotene may be used to treat other conditions as determined by your doctor.


Beta-carotene is available without a prescription.


Once a product has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although this use is not included in product labeling, beta-carotene is used in certain patients with the following medical conditions:


  • Polymorphous light eruption (a type of reaction to sun)

  • Erythropoietic protoporphyria photosensitivity reaction (a type of reaction to sun)

Other than the above information, there is no additional information relating to proper use, precautions, or side effects for these uses.


Importance of Diet


For good health, it is important that you eat a balanced and varied diet. Follow carefully any diet program your health care professional may recommend. For your specific dietary vitamin and/or mineral needs, ask your health care professional for a list of appropriate foods. If you think that you are not getting enough vitamins and/or minerals in your diet, you may choose to take a dietary supplement.


It is documented that people who consume diets high in fruits and vegetables have a reduced risk of heart disease and certain cancers. Fruits and vegetables are rich in beta-carotene and other nutrients that may be beneficial.


Beta-carotene is found in carrots; dark-green leafy vegetables, such as spinach and green leaf lettuce; sweet potatoes; broccoli; cantaloupe; and winter squash. The body converts beta-carotene into vitamin A. Ordinary cooking does not destroy beta-carotene.


Vitamins alone will not take the place of a good diet and will not provide energy. Your body needs other substances found in food, such as protein, minerals, carbohydrates, and fat. Vitamins themselves often cannot work without the presence of other foods. For example, some fat is needed so that beta-carotene can be absorbed into the body.


Before Using A-Caro-25


If you are taking this dietary supplement without a prescription, carefully read and follow any precautions on the label. For this supplement, the following should be considered:


Allergies


Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Pediatric


Problems in children have not been documented with intake of normal daily recommended amounts.


Geriatric


Problems in older adults have not been documented with intake of normal daily recommended amounts.


Breast Feeding


There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.


Interactions with Medicines


Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.


Interactions with Food/Tobacco/Alcohol


Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.


Other Medical Problems


The presence of other medical problems may affect the use of this dietary supplement. Make sure you tell your doctor if you have any other medical problems, especially:


  • Eating disorders or

  • Kidney disease or

  • Liver disease—These conditions may cause high blood levels of beta-carotene, which may increase the chance of side effects

Proper Use of beta carotene

This section provides information on the proper use of a number of products that contain beta carotene. It may not be specific to A-Caro-25. Please read with care.


Dosing


The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.


The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.


For use as a dietary supplement:


  • For oral dosage forms (capsules or chewable tablets):
    • Adults and teenagers: 6 to 15 milligrams (mg) of beta-carotene (the equivalent of 10,000 to 25,000 Units of vitamin A activity) per day.

    • Children: 3 to 6 mg of beta-carotene (the equivalent of 5,000 to 10,000 Units of vitamin A activity) per day.


For other uses:


  • For oral dosage forms (capsules or tablets):
    • To treat or prevent a reaction to sun in patients with erythropoietic protoporphyria:
      • Adults and teenagers—30 to 300 milligrams (mg) of beta-carotene (the equivalent of 50,000 to 500,000 Units of vitamin A activity) a day.

      • Children—30 to 150 mg of beta-carotene (the equivalent of 50,000 to 250,000 Units of vitamin A activity) a day.


    • To treat or prevent a reaction to sun in patients with polymorphous light eruption:
      • Adults and teenagers—75 to 180 mg of beta-carotene (the equivalent of 125,000 to 300,000 Units of vitamin A activity) a day.

      • Children—30 to 150 mg of beta-carotene (the equivalent of 50,000 to 250,000 Units of vitamin A activity) a day.



If you have high blood levels of vitamin A, your body will convert less beta-carotene to vitamin A.


Missed Dose


If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


If you miss taking a vitamin for one or more days there is no cause for concern, since it takes some time for your body to become seriously low in vitamins. However, if your health care professional has recommended that you take this vitamin, try to remember to take it as directed every day.


If you miss a dose and you are using it as medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


Storage


Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not refrigerate. Keep from freezing.


Store the dietary supplement in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.


Keep out of the reach of children.


Do not keep outdated medicine or medicine no longer needed.


Precautions While Using A-Caro-25


Use of beta-carotene has been associated with an increased risk of lung cancer in people who smoke or who have been exposed to asbestos. One study of 29,000 male smokers found an 18% increase in lung cancer in the group receiving 20 mg of beta-carotene a day for 5 to 8 years. Another study of 18,000 people found 28% more lung cancers in people with a history of smoking and/or asbestos exposure. These people took 30 mg of beta-carotene in addition to 25,000 Units of retinol (a form of vitamin A) a day for 4 years. However, one study of 22,000 male physicians, some of them smokers or former smokers, found no increase in lung cancer. These people took 50 mg of beta-carotene every other day for 12 years. If you smoke or have a history of smoking or asbestos exposure, you should not take large amounts of beta-carotene supplements for long periods of time. However, foods that are rich in beta-carotene are considered safe and appear to lower the risk of some types of cancer and possibly heart disease.


A-Caro-25 Side Effects


Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.


Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:


More common
  • Yellowing of palms, hands, or soles of feet, and to a lesser extent the face (this may be a sign that your dose of beta-carotene as a nutritional supplement is too high)

Rare
  • Diarrhea

  • dizziness

  • joint pain

  • unusual bleeding or bruising

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.


Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.



The information contained in the Thomson Reuters Micromedex products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.


The use of the Thomson Reuters Healthcare products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Thomson Reuters Healthcare and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, THOMSON REUTERS HEALTHCARE MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Thomson Reuters Healthcare does not assume any responsibility or risk for your use of the Thomson Reuters Healthcare products.


More A-Caro-25 resources


  • A-Caro-25 Use in Pregnancy & Breastfeeding
  • A-Caro-25 Drug Interactions
  • A-Caro-25 Support Group
  • 0 Reviews for A-Caro-25 - Add your own review/rating


Compare A-Caro-25 with other medications


  • Vitamin A Deficiency

Tuesday 18 September 2012

Ifa Lose




Ifa Lose may be available in the countries listed below.


Ingredient matches for Ifa Lose



Mazindol

Mazindol is reported as an ingredient of Ifa Lose in the following countries:


  • Mexico

International Drug Name Search

Thursday 13 September 2012

Cisplatin 1 mg / ml Concentrate for Solution for Infusion





1. Name Of The Medicinal Product



Cisplatin 1 mg/ml Concentrate for Solution for Infusion


2. Qualitative And Quantitative Composition



1 ml of concentrate for solution for infusion contains 1 mg of Cisplatin.



10 ml of concentrate for solution for infusion contains 10 mg of Cisplatin



25 ml of concentrate for solution for infusion contains 25 mg of Cisplatin



50 ml of concentrate for solution for infusion contains 50 mg of Cisplatin



100 ml of concentrate for solution for infusion contains 100 mg of Cisplatin



Each ml of solution contains 3.5 mg of sodium. For a full list of excipients, see section 6.1.



3. Pharmaceutical Form



Concentrate for solution for infusion



Clear, colourless to pale yellow solution in an amber glass vial, which is practically free from particles.



4. Clinical Particulars



4.1 Therapeutic Indications



Cisplatin is intended for the treatment of:



• advanced or metastasised testicular cancer



• advanced or metastasised ovarian cancer



• advanced or metastasised bladder carcinoma



• advanced or metastasised squamous cell carcinoma of the head and neck



• advanced or metastasised non-small cell lung carcinoma



• advanced or metastasised small cell lung carcinoma.



• Cisplatin is indicated in the treatment of cervical carcinoma in combination with other chemotherapeutics or with radiotherapy.



• Cisplatin can be used as monotherapy and in combination therapy



4.2 Posology And Method Of Administration



Cisplatin 1 mg/ml concentrate for solution for infusion is to be diluted before administration. For instructions on dilution of the product before administration (see section 6.6).



The diluted solution should be administered only intravenously by infusion (see below). For administration, any device containing aluminium that may come in contact with cisplatin (sets for intravenous infusion, needles, catheters, syringes) must be avoided (see section 6.2.).



Adults and children:



The cisplatin dosage depends on the primary disease, the expected reaction, and on whether cisplatin is used for monotherapy or as a component of combination chemotherapy. The dosage directions are applicable for both adults and children.



For monotherapy, the following two dosage regimens are recommended:



• Single dose of 50 to 120 mg/m² body surface every 3 to 4 weeks;



• 15 to 20 mg/m²/day for five days, every 3 to 4 weeks.



If cisplatin is used in combination chemotherapy, the dose of cisplatin must be reduced. A typical dose is 20 mg/m² or more once every 3 to 4 weeks.



For treatment of cervical cancer cisplatin is used in combination with radiotherapy. A typical dose is 40 mg/m2 weekly for 6 weeks.



For warnings and precautions to be considered prior to the start of the next treatment cycle (see section 4.4).



In patients with renal dysfunction or bone marrow depression, the dose should be reduced adequately (see section 4.3).



The cisplatin solution for infusion prepared according to instructions (see section 6.6.) should be administered by intravenous infusion over a period of 6 to 8 hours.



Adequate hydration must be maintained from 2 to 12 hours prior to administration until minimum 6 hours after the administration of cisplatin. Hydratation is necessary to cause sufficient diuresis during and after treatment with cisplatin. It is realised by intravenous infusion of one of the following solutions:



sodium chloride solution 0.9%;



mixture of sodium chloride solution 0.9% and glucose solution 5% (1:1).



Hydration prior to treatment with cisplatin:



Intravenous infusion of 100 to 200ml/hour for a period of 6 to 12 hours, with a total amount of at least 1L.



Hydration after termination of the administration of cisplatin:



Intravenous infusion of another 2 litres at a rate of 100 to 200 ml per hour for a period of 6 to 12 hours.



Forced diuresis may be required should the urine secretion be less than 100 to 200 ml/hour after hydration. Forced diuresis may be realised by intravenously administering 37.5g mannitol as a 10% solution (375 ml mannitol solution 10%), or by administration of a diuretic if the kidney functions are normal.



The administration of mannitol or a diuretic is also required when the administrated cisplatin dose is higher than 60 mg/m2 of body surface.



It is necessary that the patient drinks large quantities of liquids for 24 hours after the cisplatin infusion to ensure adequate urine secretion.



4.3 Contraindications



Cisplatin is contraindicated in patients



- with hypersensitivity to cisplatin or other platinum compounds or to any of the excipients;



- with pre-existing renal impairment*



- in dehydrated condition (pre- and post-hydration is required to prevent serious renal dysfunction);



- with myelosuppression;



- with pre-existing hearing impairment*;



- with neuropathy caused by cisplatin



- who are breastfeeding (see section 4.6)



- in combination with live vaccines, including yellow fever vaccine (see section 4.5).



- in combination with phenytoin in prophylactic use (see section 4.5)



* Due to the fact that cisplatin is nephrotoxic and neurotoxic (in particular ototoxic). These toxicities may be cumulative if disorders of this type pre-exist.



4.4 Special Warnings And Precautions For Use



Cisplatin reacts with metallic aluminium to form a black precipitate of platinum. All aluminium



containing IV sets, needles, catheters and syringes should be avoided.



Cisplatin may only be administered under the supervision of a physician qualified in oncology with experience in the use of antineoplastic chemotherapy.



Appropriate monitoring and management of the treatment and its complications are only possible if adequate diagnosis and exact treatment conditions are available.



Cisplatin is proven to be cumulative ototoxic, nephrotoxic, and neurotoxic. The toxicity caused by cisplatin may be amplified by the combined use with other medicinal products, which are toxic for the said organs or systems.



Male and female patients during and for at least 6 months after the treatment with cisplatin (see section 4.6).



1.Nephrotoxicity



Cisplatin causes severe cumulative nephrotoxicity. A urine output of 100 mL/hour or greater will tend to minimize cisplatin nephrotoxicity. This can be accomplished by prehydration with 2 litres of an appropriate intravenous solution, and similar post cisplatin hydration (recommended 2,500 mL/m2/24 hours). If vigorous hydration is insufficient to maintain adequate urinary output, an osmotic diuretic may be administered (eg, mannitol). Hyperuricaemia and hyperalbuminaemia may predispose to cisplatin- induced nephrotoxicity.



2.Neuropathies



Severe cases of neuropathies have been reported.



These neuropathies may be irreversible and may manifest by paresthesia, areflexia and a proprioceptive loss and a sensation of vibrations. A loss of motor function has also been reported. A neurologic examination must be carried out at regular intervals. Special caution must be exercised for patients with peripheral neuropathy not caused by cisplatin.



3.Ototoxicity



Ototoxicity has been observed in up to 31% of patients treated with a single dose of cisplatin 50mg/m2, and is manifested by tinnitus and/or hearing loss in the high frequency range (4000 to 8000Hz). Decreased ability to hear conversational tones may occur occasionally. Ototoxic effect may be more pronounced in children receiving cisplatin. Hearing loss can be unilateral or bilateral and tends to become more frequent and severe with repeated doses; however, deafness after initial dose of cisplatin has been reported rarely. Ototoxicity may be enhanced with prior simultaneous cranial irradiation and may be related to peak plasma concentration of cisplatin. It is unclear whether cisplatin induced ototoxicity is reversible. Careful monitoring by audiometry should be performed prior to initiation of therapy and prior to subsequent doses of cisplatin. Vestibular toxicity has also been reported.



(see section “Undesirable Effects”).



Before, during and after administration of cisplatin, the following parameters resp. organ functions must be determined:



- renal function;



- hepatic function;



- hematopoiesis functions (number of red and white blood cells and blood platelets);



- serum electrolytes (calcium, sodium, potassium, magnesium).



These examinations must be repeated every week over the entire duration of the treatment with cisplatin.



Repeating administration of cisplatin must be delayed until normal values are achieved for the following parameters:



- Serum creatinine < 130 µmol/l rsp. 1.5 mg/dl



- Urea < 25 mg/dl



- White blood cells > 4.000/µl resp. > 4.0 x 109/l



- Blood platelets > 100.000/µl resp. > 100 x 109/l



- Audiogram: results within the normal range.



4. Allergic phenomena



As with other platinum-based products, hypersensitivity reactions appearing in most cases during perfusion may occur, and necessitate discontinuation of the perfusion and an appropriate symptomatic treatment. Cross reactions, sometimes fatal, have been reported with all the platinum compounds (See "Side Effects" and “Contraindications”). Anaphylactic-like reactions to cisplatin have been observed. These reactions can be controlled by administration of antihistamines, adrenaline and/or glucocorticoids.



5.Hepatic function and haematological formula



The haematological formula and the hepatic function must be monitored at regular intervals.



6 Carcinogenic potential



In humans, in the rare cases the appearance of acute leukaemia has coincided with use of Cisplatin, which was in general associated with other leukaemogenic agents. Cisplatin is a bacterial mutagen and causes chromosome aberrations in cultures on animal cells. Carcinogenicity is possible but has not been demonstrated. Cisplatin is teratogenetic and embryo toxic in mice.



7.Injection site reactions



Injection site reactions may occur during the administration of cisplatin. Given the possibility of extravasation, it is recommended to closely monitor the infusion site for possible infiltration during drug administration. A specific treatment for extravasation reactions is unknown at this time.



WARNING



This cytostatic agent had a more marked toxicity than is usually found in antineoplastic chemotherapy.



Renal toxicity, which is above-all cumulative, is severe and requires particular precautions during administration (see "Side Effects" and "Administration").



Nausea and vomiting may be intense and require adequate antiemetic treatment. Close supervision must also be carried out with regard to ototoxicity, myelodepression and anaphylactic reactions (see "Side Effects").



Preparation of the intravenous solution



Warning



As with all other potentially toxic products, precautions are essential when handling the cisplatin solution. Skin lesions are possible in the event of accidental exposure to the product. It is advisable to wear gloves. In the event the cisplatin solution comes into contact with the skin or mucous membranes, wash the skin or mucous membranes vigorously with soap and water.



Conforming to the procedures appropriate for the manipulation and elimination of cytostatic agents is recommended.



Before administering the solution to the patient, verify the clarity of the solution and the absence of particles.



Special care is required for patients with acute bacterial or viral infections.



Male and female patients have to use effective contraception during and for at least 6 months after the treatment with cisplatin (see section 4.6).



4.5 Interaction With Other Medicinal Products And Other Forms Of Interaction



Simultaneous use of myelosuppressives or radiation will boost the effects of cisplatin's myelosuppressive activity.The occurrence of nephrotoxicity caused by cisplatin may be intensified by concomitant treatment with antihypertensives containing furosemide, hydralazine, diazoxide, and propranolol.



Nephrotoxic substances:



Concomitant administration of nephrotoxic (e.g. cephalosporins, aminoglycosides or Amphotericin B or contrast media) or ototoxic (e.g. aminoglycosides) medicinal products will potentiate the toxic effect of cisplatin on the kidneys. During or after treatment with cisplatin caution is advised with predominantly renally eliminated substances, e.g. cytostatic agents such as bleomycin and methotrexate, because of potentially reduced renal elimination.



Cisplatin given in combination with bleomycin and vinblastin can lead to a Raynaud- phenomenon.



The renal toxicity of ifosfamide may be greater when used with cisplatin or in patients who have previously been given cisplatin.



Reduction of the blood's lithium values was noticed in a few cases after treatment with cisplatin combined with bleomycin and etoposide. It is therefore recommended to monitor the lithium values.



It may be required to adjust the dosage of allopurinol, colchicine, probenecid, or sulfinpyrazone if used together with cisplatin, since cisplatin causes an increase in serum uric acid concentration.



Cisplatin given in combination with bleomycin and vinblastin can lead to a Raynaud- phenomenon.



In a study of cancer patients with metastatic or advanced tumors, docetaxel in combination with cisplatin induced more severe neurotoxic effects (doserelated and sensoric) than either drug as a single agent in similar doses.



Chelating agents like penicillamine may diminish the effectiveness of cisplatin.



In concomitant use of cisplatin and ciclosporin the excessive immunosuppression with risk of lymphoproliferation is to be taken into consideration.



Ototoxic substances:



Concomitant administration of ototoxic (e.g. aminoglycosides, loop diuretics) medicinal products will potentiate the toxic effect of cisplatin on auditory function. Except for patients receiving doses of cisplatin exceeding 60 mg/m2, whose urine secretion is less than 1000 ml per 24 hours, no forced diuresis with loop diuretics should be applied in view of possible damage to the kidney tract and ototoxicity.



Ifosfamide may increase hearing loss due to cisplatin.



Weakened live vaccines:



Yellow fever vaccine is strictly contraindicated because of the risk of fatal systemic vaccinal disease (see section 4.3.). In view of the risk of generalised illness, it is advisable to use an inactive vaccine if available.



Oral anticoagulants:



In the event of simultaneous use of oral anticoagulants, it is advisable regularly to check the INR.



Antihistamines, Phenothiazines and others:



Simultaneous use of antihistamines, buclizine, cyclizine, loxapine, meclozine, phenothiazines, thioxanthenes or trimethobenzamides may mask ototoxicity symptoms (such as dizziness and tinnitus).



Anticonvulsive substances:



Serum concentrations of anticonvulsive medicines may remain at subtherapeutic levels during treatment with cisplatin. Cisplatin may reduce the absorption of phenytoin resulting in reduced epilepsy control when phenytoin is given as current treatment. During cisplatin therapy starting a new anticonvulsivant treatment with phenytoin is strictly contraindicated (see section 4.3.).



Pyroxidine + altretamine combination:



During a randomised study of the treatment of advanced ovarian cancer, the response time was unfavourably affected when pyridoxine was used in combination with altretamine (hexamethylmelamine) and Cisplatin.



Paclitaxel:



Treatment with cisplatin prior to an infusion with paclitaxel may reduce the clearance of paclitaxel by 33% and therefore can intensify neurotoxicity.



4.6 Pregnancy And Lactation



Cisplatin may be toxic to the foetus when administered to a pregnant woman. Animal studies have shown reproductive toxicity and transplacental carcinogenity (see section 5.3).



During treatment with Cisplatin and for a minimum of the following 6 months, appropriate measures must be taken to avoid pregnancy; this applies to patients of both sexes.



Genetic consultation is recommended if the patient wishes to have children after ending the treatment.



Since a treatment with cisplatin may cause irreversible infertility, it is recommended that men, who wish to become fathers in the future, ask for advice regarding cryoconservation of their sperm prior to treatment.



Breast-feeding



Cisplatin is excreted in breast milk. Patients treated with cisplatin must not breastfeed.



4.7 Effects On Ability To Drive And Use Machines



No studies on the effects on the ability to drive and use machines have been performed.



However, the profiles of undesirable effects (central nervous system and special senses) may lead to minor or moderate influence on the ability to drive and use machines. Patients who suffer from these effects (e.g. sleepy or vomiting) must avoid driving and operating machinery.



4.8 Undesirable Effects



Undesirable effects depend on the used dose and may have cumulative effects.



The most frequently reported adverse events (>10%) of cisplatin were haematological (leukopenia, thrombocytopenia and anaemia), gastrointestinal (anorexia, nausea, vomiting and diarrhoea), ear disorders (hearing impairment), renal disorders (renal failure, nephrotoxicity, hyperuricaemia) and fever.



Serious toxic effects on the kidneys, bone marrow and ears have been reported in up to about one third of patients given a single dose of cisplatin; the effects are generally dose-related and cumulative. Ototoxicity may be more severe in children.



Frequencies are defined using the following convention:



Very common (  <1/1,000); very rare (<1/10,000), not known (cannot be estimated from the available data).



Hypersensitivity may present as rash, urticaria, erythema, or pruritus allergic.



Table of Adverse Drug Events Reported During Clinical or Postmarketing Experience



(MedDRA terms).



















































































































System Organ Class




Frequency




MedDRA Term




Infections and infestations




Not Known




Infection a




Common




Sepsis


 


Blood and lymphatic system disorders




Very common




Bone marrow failure, thrombocytopenia, leukopenia, anaemia




Not known




Coombs positive haemolytic anaemia


 


Neoplasm benign, malignant, and unspecified




Rare




Acute leukaemia




Immune system disorders




Uncommon




Anaphylactoidb reaction



Hypersensitivity may present as rash, urticaria, erythema, or pruritus allergic.




Endocrine disorders




Not known




Blood amylase increased, inappropriate antidiurectic hormone secretion




Metabolism and nutrition disorders




Not known




Dehydration, , hypokalaemia, hypophosphataemia, hypocalcaemia, tetany, muscle spasms and/or electrocardiogram changes occur as a result of damage to the kidney caused by cisplatin, thus reducing the tubular resorption of cations. Generally, normal serum electrolyte levels are restored by administering supplemental electrolytes and discontinuing cisplatin. Hypercholesterolemia. Increased blood amylase




Uncommon




Hypomagnesaemia


 


Very rare




Increased blood iron


 


Very common




Hyponatraemia


 


Nervous system disorders




Not known




Cerebrovascular accident, haemorrhagic stroke, ischaemic stroke ageusia, cerebral arteritis, Lhermitte's sign, myelopathy, autonomic neuropathy




Rare




Convulsion, neuropathy peripheral, leukoencephalopathy, reversible posterior leukoencephalopathy syndrome


 


Eye disorders




Not known




Vision blurred, colour blindness acquired, blindness cortical, optic neuritis, papilloedema, retinal pigmentation




Ear and labyrinth disorders




Uncommon




Ototoxicity




Not known




Tinnitus, deafness


 

 


Rare




Patients may lose the ability to conduct a normal conversation. Cisplatin- induced hearing impairment may be serious for children and elderly patients. (See section 4.4.)




Cardiac disorders




Not known




Cardiac disorder




Common




Arrhythmia, bradycardia, tachycardia


 


Rare




Myocardial infarction


 


Very rare




Cardiac arrest


 


Vascular disorders




Not known




Thrombotic microangiopathy (haemolytic uraemic syndrome), Raynaud's phenomenon




Common




Phlebitis at injection site


 


Gastrointestinal disorders




Not known




Vomiting, nausea, anorexia, hiccups, diarrhoea




Uncommon




Metallic setting on the gums


 


Rare




Stomatitis


 


Hepatobiliary disorders




Not known




Hepatic enzymes increased, blood bilirubin increased




Rare




Reduced blood albumin levels


 


Respiratory, thoracic and mediastinal disorders




Common




Dyspnoea, pneumonia, respiratory failure,




Not known




Pulmonary embolism


 


Skin and subcutaneous tissue disorders




Not known




Rash, alopecia




Musculoskeletal, connective tissue and bone disorders




Not known




Muscle spasms




Renal and urinary disorders




Not known




Renal failure acute, renal failurec, renal tubular disorder



The administration of cisplatin using a 6-8 hour infusion with intravenous hydration and mannitol has been used to reduce nephrotoxicity. However renal toxicity still can occur after utilisation of these procedures. (See section 4.4.)




Very common




Hyperuricaemia,


 


Reproductive system and breast disorders




Uncommon




Abnormal spermatogenesis and ovulation, and painful gynaecomastia




General disorders and administration site condition




Not known




Pyrexia (very common) , asthenia, malaise, injection site extravasationd



* Source of frequencies: Cisplatin Injection Company Core Data Sheet (CCDS), BMS Pharmacovigilance & Epidemiology, 02 August 2010. Frequencies not reported in the CCDS, have been added from the assessment report



a: Infectious complications have led to death in some patients.



b: Symptoms reported for anaphylactoid reaction such as facial edema (PT-face oedema), wheezing,bronchospasm, tachycardia, and hypotension will be included in the parentheses for anaphylactoid reaction in the AE frequency table.



c: Elevations in BUN and creatinine, serum uric acid, and/or a decrease in creatinine clearance are subsumed under renal insufficiency/failure.



d: Local soft tissue toxicity including tissue cellulitis, fibrosis, and necrosis (common) pain (common), oedema (common) and erythema (common) as the result of extravasation.



4.9 Overdose



Symptoms of overdose involve above mentioned side effects in an excessive manner.



Efficient hydration and osmotic diuresis can aid in reduction of toxicity, provided this is applied immediately after overdose.



In case of overdose (2), direct effects on the respiratory centre are possible, which might result in life threatening respiratory disorders and acid base equilibrium disturbance due to passage of the blood brain barrier.



An acute overdose of Cisplatin may result in renal failure, liver failure, deafness, ocular toxicity (including detachment of the retina), significant myelosuppression, untreatable nausea and vomiting and/or neuritis. An overdose may be fatal.



There is no specific antidote in the event of an overdose of Cisplatin. Even if haemodialysis is initiated 4 hours after the overdose it has little effect on the elimination of cisplatin from the body following a strong and rapid fixation of Cisplatin to proteins.



Treatment in the event of an overdose consists of general support measures.



Convulsions may be treated with appropriate anticonvulsants. Renal function, cardiovascular function and blood counts should be monitored daily in order to assess the potential toxicity to these systems. Serum magnesium and calcium levels should be carefully monitored as should symptoms and signs of voluntary muscle irritability. If symptomatic tetany develops, electrolyte supplements should be administered. Serum liver enzymes and uric acid should also be monitored daily after an acute overdose.



If fever develops during prolonged myelosuppression, appropriate presumptive antibiotic coverage should be instilled after cultures have been obtained.



5. Pharmacological Properties



5.1 Pharmacodynamic Properties



Pharmacotherapeutic group: Other antineoplastic agents, Platinum compounds, ATC code: L01XA01



Cisplatin is an inorganic compound which contains a heavy metal [cis- diamminedichloridoplatinum (II)]. It inhibits DNA-synthesis by the formation of DNA cross-links. Protein and RNA synthesis are inhibited to a lesser extent.



Although the most important mechanism of action seems to be inhibition of DNA synthesis, other mechanisms can also contribute to the antineoplastic activity of cisplatin, including the increase of tumour immunogenicity. The oncolytic properties of cisplatin are comparable to the alkylating agents. Cisplatin also has immunosuppressive, radiosensitising, and antibacterial properties. Cisplatin seems to be cell-cycle non-specific. The cytotoxic action of cisplatin is caused by binding to all DNA-bases, with a preference for the N-7 position of guanine and adenosine.



5.2 Pharmacokinetic Properties



After intravenous administration cisplatin quickly distributes across all tissues; cisplatin badly penetrates in the central nervous system. The highest concentrations are reached in the liver, kidneys, bladder, muscle tissue, skin, testes, prostate, pancreas and spleen.



After intravenous administration the elimination of filterable, non-protein bound cisplatin runs biphasic, with an initial and terminal half life of 10-20 minutes and 32-53 minutes, respectively. The elimination of the total quantity of platinum runs triphasic with half lives of 14 minutes, and 274 minute and 53 days respectively.



Cisplatin is bound to plasma proteins for 90%.



The excretion primarily takes place via the urine: 27-43% of the administered dose is recovered in the urine in the first five days after the treatment. Platinum is also excreted in the bile.



5.3 Preclinical Safety Data



Chronic toxicity



In chronic toxicity models indications for renal damage, bone marrow depression, gastro-intestinal disorders and ototoxicity have been observed.



Mutagenicity en carcinogenity



Cisplatin is mutagenic in numerous in vitro and in vivo tests (bacterial test systems, chromosomal disorders in animal cells and in tissue cultures). In long-term studies it has been shown that cisplatin is carcinogenic in mice and rats.



Reproductive toxicity



In mice, gonadal suppression, resulting in amenorrhoea or azoospermia has been observed, which can be irreversible and result in infertility. In female rats cisplatin induced morphological changes in the ovaries, causing partial and reversible infertility.



Studies in rats have shown that exposure during pregnancy can cause tumours in adult offspring.



Cisplatin is embryotoxic in mice and rats, and in both species deformities have been reported. Cisplatin is excreted in the breast milk.



6. Pharmaceutical Particulars



6.1 List Of Excipients



Sodium chloride,



Sodium hydroxide (for pH adjustment)



Hydrochloric acid (for pH adjustment)



Water for injections



6.2 Incompatibilities



Do not bring in contact with aluminium. Cisplatin reacts with metal aluminium to form a black precipitate of platinum. All aluminium-containing IV sets, needles, catheters and syringes should be avoided. Cisplatin decomposes with solution in media with low chloride content; the chloride concentration should at least be equivalent to 0.45% of sodium chloride.



In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products.



Antioxidants (such as sodium metabisulphite), bicarbonates (sodium bicarbonate), sulfates, fluorouracil and paclitaxel may inactivate cisplatin in infusion systems.



Cisplatin should only be used with those diluents specified in section 6.6.



6.3 Shelf Life



Before opening



2 years



After dilution



Chemical and physical in-use stability after dilution with infusion fluids described in section 6.6, indicate that after dilution with recommended intravenous fluids, Cisplatin Injection remains stable for 24 hours at 20 - 25 °C room temperature. The diluted solution should be protected from light. Do not store diluted solutions in the refrigerator or freezer.



From a microbiological point of view, the diluted solution should be used immediately. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user and dilution should taken place in controlled and validated aseptic conditions.



6.4 Special Precautions For Storage



Undiluted solution:



Keep container in the outer carton in order to protect from light. Do not refrigerate or freeze.



For the storage conditions of the diluted medicinal product (see section 6.3).



6.5 Nature And Contents Of Container



For 10 ml



10 ml type I amber glass vial with a chlorobutyl grey stopper, sealed with an aluminium flip off transparent white seal



For 25 ml



30 ml type I amber glass vial with a chlorobutyl grey stopper, sealed with an aluminium flip off transparent white seal



For 50 ml



50 ml type I amber glass vial with a chlorobutyl grey stopper, sealed with an aluminium flip off transparent white seal.



For 100 ml



100 mL Type I amber glass vial with a 20 mm, S127 – 4432/50 grey rubber stopper , sealed with 20 mm aluminium flip off transparent white seal



Not all pack sizes may be marketed



6.6 Special Precautions For Disposal And Other Handling



Preparation and handling of the product



Like with all anti-neoplastic products caution is needed with the processing of cisplatin. Must be diluted before use. Dilution should take place under aseptic conditions by trained personnel in an area specifically intended for this. Protective gloves should be worn for this. Precautions should be taken to avoid contact with the skin and mucous membranes. If skin contact did occur anyway, the skin should be washed with soap and water immediately. With skin contact tingling, burns and redness have been observed. In case of contact with the mucous membranes they should be copiously rinsed with water. After inhalation dyspnoea, pain in the chest, throat irritation and nausea have been reported.



Pregnant women must avoid contact with cytostatic drugs.



Bodily waste matter and vomit should be disposed with care.



If the solution is cloudy or a deposit that does not dissolve is noticed, the bottle should be discarded.



A damaged bottle must be regarded and treated with the same precautions as contaminated waste. Contaminated waste must be stored in waste containers specifically marked for this. See section “Disposal”.



Preparation of the intravenous administration



Take the quantity of the solution that is needed from the bottle and dilute with at least 1 litre of the following solutions:



- sodium chloride 0.9%



- mixture of sodium chloride 0.9% / glucose 5% (1:1), (resulting final concentrations: sodium chloride 0.45%, glucose 2.5%)



- sodium chloride 0.9% and 1.875% mannitol, for injection



- sodium chloride 0.45%, glucose 2.5% and 1.875% mannitol for injection



Always look at the injection before use. If the solution is not clear or an undissolvable precipitate is formed the solution must not be used. Only a clear solution, free from particles should be administered.



DO NOT bring in contact with injection material that contains aluminium



DO NOT administer undiluted



With respect to microbiological, chemical and physical stability with use of the undiluted solutions (see section 6.3).



Disposal



All materials that have been used for the preparation and administration, or which have been in contact with cisplatin in any way, must be disposed of according to local cytotoxic guidelines. Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.



7. Marketing Authorisation Holder



Accord Healthcare Limited



Sage House



319, Pinner Road



North Harrow



Middlesex, HA1 4HF



UK



8. Marketing Authorisation Number(S)



PL 20075/0123



9. Date Of First Authorisation/Renewal Of The Authorisation



05/07/2011



10. Date Of Revision Of The Text



01/11/2011




Wednesday 12 September 2012

Ancobon



flucytosine

Dosage Form: capsules

Warning

Use with extreme caution in patients with impaired renal function. Close monitoring of hematologic, renal and hepatic status of all patients is essential. These instructions should be thoroughly reviewed before administration of Ancobon.




Ancobon Description


Ancobon (flucytosine), an antifungal agent, is available as 250 mg and 500 mg capsules for oral administration. Each capsule also contains corn starch, lactose and talc. Gelatin capsule shells contain parabens (butyl, methyl, propyl) and sodium propionate, with the following dye systems: 250 mg capsules - black iron oxide, FD&C Blue No. 1, FD&C Yellow No. 6, D&C Yellow No. 10 and titanium dioxide; 500 mg capsules - black iron oxide and titanium dioxide. Chemically, flucytosine is 5-fluorocytosine, a fluorinated pyrimidine which is related to fluorouracil and floxuridine. It is a white to off-white crystalline powder with a molecular weight of 129.09 and the following structural formula:




Ancobon - Clinical Pharmacology


Flucytosine is rapidly and virtually completely absorbed following oral administration. Ancobon is not metabolized significantly when given orally to man. Bioavailability estimated by comparing the area under the curve of serum concentrations after oral and intravenous administration showed 78% to 89% absorption of the oral dose. Peak serum concentrations of 30 to 40 µg/mL were reached within 2 hours of administration of a 2 g oral dose to normal subjects. Other studies revealed mean serum concentrations of approximately 70 to 80 μg/mL 1 to 2 hours after a dose in patients with normal renal function receiving a 6-week regimen of flucytosine (150 mg/kg/day given in divided doses every 6 hours) in combination with amphotericin B. The half-life in the majority of healthy subjects ranged between 2.4 and 4.8 hours. Flucytosine is excreted via the kidneys by means of glomerular filtration without significant tubular reabsorption. More than 90% of the total radioactivity after oral administration was recovered in the urine as intact drug. Flucytosine is deaminated (probably by gut bacteria) to 5-fluorouracil. The area under the curve (AUC) ratio of 5-fluorouracil to flucytosine is 4%. Approximately 1% of the dose is present in the urine as the α-fluoro-β-ureido-propionic acid metabolite. A small portion of the dose is excreted in the feces.


The half-life of flucytosine is prolonged in patients with renal insufficiency; the average half-life in nephrectomized or anuric patients was 85 hours (range: 29.9 to 250 hours). A linear correlation was found between the elimination rate constant of flucytosine and creatinine clearance.


In vitro studies have shown that 2.9% to 4% of flucytosine is protein-bound over the range of therapeutic concentrations found in the blood. Flucytosine readily penetrates the blood-brain barrier, achieving clinically significant concentrations in cerebrospinal fluid.



Pharmacokinetics in Pediatric Patients


Limited data are available regarding the pharmacokinetics of Ancobon administered to neonatal patients being treated for systemic candidiasis. After five days of continuous therapy, median peak levels in infants were 19.6 µg/mL, 27.7 µg/mL, and 83.9 µg/mL at doses of 25 mg/kg (N=3), 50 mg/kg (N=4), and 100 mg/kg (N=3), respectively. Mean time to peak serum levels was of 2.5 ± 1.3 hours, similar to that observed in adult patients. A good deal of interindividual variability was noted, which did not correlate with gestational age. Some patients had serum levels > 100 µg/mL, suggesting a need for drug level monitoring during therapy. In another study, serum concentrations were determined during flucytosine therapy in two patients (total assays performed =10). Median serum flucytosine concentrations at steady state were calculated to be 57 ± 10 µg/mL (doses of 50 to 125 mg/kg/day, normalized to 25 mg/kg per dose for comparison). In three infants receiving flucytosine 25 mg/kg/day (four divided doses), a median flucytosine half-life of 7.4 hours was observed, approximately double that seen in adult patients. The concentration of flucytosine in the cerebrospinal fluid of one infant was 43 µg/mL 3 hours after a 25 mg oral dose, and ranged from 20 to 67 mg/L in another neonate receiving oral doses of 120 to 150 mg/kg/day.



MICROBIOLOGY



Mechanism of Action


Flucytosine is taken up by fungal organisms via the enzyme cytosine permease. Inside the fungal cell, flucytosine is rapidly converted to fluorouracil by the enzyme cytosine deaminase. Fluorouracil exerts its antifungal activity through the subsequent conversion into several active metabolites, which inhibit protein synthesis by being falsely incorporated into fungal RNA or interfere with the biosynthesis of fungal DNA through the inhibition of the enzyme thymidylate synthetase.



Activity In Vitro


Flucytosine exhibited activity against Candida species and Cryptococcus neoformans. In vitro activity of flucytosine is affected by the test conditions. It is essential to follow the approved standard method guidelines.1


Susceptibility Tests


Cryptococcus neoformans:


No interpretive criteria have been established for Cryptococcus neoformans.1


Candida:


Quantitative methods are used to determine antimicrobial minimum inhibitory concentrations (MICs). These MICs provide estimates of the susceptibility of yeasts to antimicrobial compounds. The MICs should be determined using a standardized procedure. Standardized procedures are based on a dilution method1 with standardized inoculum concentrations and standardized concentrations of flucytosine powder. The MIC values should be interpreted according to the following criteria:










        MIC(µg/mL)        Interpretation
       ≤4        Susceptible (S)
        8-16        Intermediate (I)
       ≥32        Resistant (R)

A report of “Susceptible” indicates that the pathogen is likely to be inhibited if the antimicrobial compound in the blood reaches the concentration usually achievable. A report of "Intermediate" indicates that the result should be considered equivocal, and, if the microorganism is not fully susceptible to alternative, clinically feasible drugs, the test should be repeated. This category implies possible clinical applicability in body sites where the drug is physiologically concentrated or in situations where a high dosage of drug can be used. This category also provides a buffer zone which prevents small uncontrolled technical factors from causing major discrepancies in interpretation. A report of "Resistant" indicates that the pathogen is not likely to be inhibited if the antimicrobial compound in the blood reaches the concentration usually achievable; other therapy should be selected. Because of other significant host factors, in vitro susceptibility may not correlate with clinical outcomes.


Standardized susceptibility test procedures require the use of laboratory control microorganisms to control the technical aspects of the laboratory procedures. Standard flucytosine powder should provide the following MIC values:


Acceptable ranges of MICs (µg/mL) for control strains for 48-hour reference broth macrodilution testing:














MicroorganismMIC(µg/mL)[% of data included]
Candida parapsilosisATCC 220190.12-0.5[98.6%]
Candida kruseiATCC 62584.0-16[96.8%]

Acceptable ranges of MICs (µg/mL) for control strains for 24-hour and 48-hour reference broth microdilution testing:



























                        MIC (µg/mL) ranges for microdilution testing                    
24-hour48-hour
MicroorganismRangeMode% of Data

Included
RangeMode% of Data

Included
Candida

parapsilosis

ATCC 22019
0.06-0.250.1299%0.12-0.50.2598%
Candida krusei

ATCC 6258
4.0-168.098%8.0-321699%

Drug Resistance


Flucytosine resistance may arise from a mutation of an enzyme necessary for the cellular uptake or metabolism of flucytosine or from an increased synthesis of pyrimidines, which compete with the active metabolites of flucytosine (fluorinated antimetabolites). Resistance to flucytosine has been shown to develop during monotherapy after prolonged exposure to the drug.



Drug Combination


Antifungal synergism between flucytosine and polyene antibiotics, particularly amphotericin B has been reported in vitro. Ancobon is usually administered in combination with amphotericin B due to lack of cross-resistance and a reported synergistic activity of both drugs.



Indications and Usage for Ancobon


Ancobon is indicated only in the treatment of serious infections caused by susceptible strains of Candida and/or Cryptococcus.


Candida: Septicemia, endocarditis and urinary system infections have been effectively treated with flucytosine. Limited trials in pulmonary infections justify the use of flucytosine.


Cryptococcus: Meningitis and pulmonary infections have been treated effectively. Studies in septicemias and urinary tract infections are limited, but good responses have been reported.


Ancobon should be used in combination with amphotericin B for the treatment of systemic candidiasis and cryptococcosis because of the emergence of resistance to Ancobon (See MICROBIOLOGY).



Contraindications


Ancobon should not be used in patients with a known hypersensitivity to the drug.



Warnings


Ancobon must be given with extreme caution to patients with impaired renal function. Since Ancobon is excreted primarily by the kidneys, renal impairment may lead to accumulation of the drug. Ancobon serum concentrations should be monitored to determine the adequacy of renal excretion in such patients. Dosage adjustments should be made in patients with renal insufficiency to prevent progressive accumulation of active drug.


Ancobon must be given with extreme caution to patients with bone marrow depression. Patients may be more prone to depression of bone marrow function if they: 1) have a hematologic disease, 2) are being treated with radiation or drugs which depress bone marrow, or 3) have a history of treatment with such drugs or radiation. Bone marrow toxicity can be irreversible and may lead to death in immunosuppressed patients. Frequent monitoring of hepatic function and of the hematopoietic system is indicated during therapy.



Precautions



General


Before therapy with Ancobon is instituted, electrolytes (because of hypokalemia) and the hematologic and renal status of the patient should be determined (see WARNINGS). Close monitoring of the patient during therapy is essential.



Laboratory Tests


Since renal impairment can cause progressive accumulation of the drug, blood concentrations and kidney function should be monitored during therapy. Hematologic status (leucocyte and thrombocyte count) and liver function (alkaline phosphatase, SGOT and SGPT) should be determined at frequent intervals during treatment as indicated.



Drug Interactions


Cytosine arabinoside, a cytostatic agent, has been reported to inactivate the antifungal activity of Ancobon by competitive inhibition. Drugs which impair glomerular filtration may prolong the biological half-life of flucytosine.



Drug/Laboratory Test Interactions


Measurement of serum creatinine levels should be determined by the Jaffé reaction, since Ancobon does not interfere with the determination of creatinine values by this method. Most automated equipment for measurement of creatinine makes use of the Jaffé reaction.



Carcinogenesis, Mutagenesis, Impairment of Fertility


Flucytosine has not undergone adequate animal testing to evaluate carcinogenic potential. The mutagenic potential of flucytosine was evaluated in Ames-type studies with five different mutants of S. typhimurium and no mutagenicity was detected in the presence or absence of activating enzymes. Flucytosine was nonmutagenic in three different repair assay systems (i.e., rec, uvr and pol).


There have been no adequate trials in animals on the effects of flucytosine on fertility or reproductive performance. The fertility and reproductive performance of the offspring (F1 generation) of mice treated with 100 mg/kg/day (345 mg/M2/day or 0.059 times the human dose), 200 mg/kg/day (690 mg/M2/day or 0.118 times the human dose) or 400 mg/kg/day (1380 mg/M2/day or 0.236 times the human dose) of flucytosine on days 7 to 13 of gestation was studied; the in utero treatment had no adverse effect on the fertility or reproductive performance of the offspring.



Pregnancy


Teratogenic Effects. Pregnancy Category C


Flucytosine was shown to be teratogenic (vertebral fusions) in the rat at doses of 40 mg/kg/day (298 mg/M2/day or 0.051 times the human dose) administered on days 7 to 13 of gestation. At higher doses (700 mg/kg/day; 5208 mg/M2/day or 0.89 times the human dose administered on days 9 to 12 of gestation), cleft lip and palate and micrognathia were reported. Flucytosine was not teratogenic in rabbits up to a dose of 100 mg/kg/day (1423 mg/M2/day or 0.243 times the human dose) administered on days 6 to 18 of gestation. In mice, 400 mg/kg/day of flucytosine (1380 mg/M2/day or 0.236 times the human dose) administered on days 7 to 13 of gestation was associated with a low incidence of cleft palate that was not statistically significant. There are no adequate and well-controlled studies in pregnant women. Ancobon should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.



Nursing Mothers


It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from Ancobon, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.



Pediatric Use


The efficacy and safety of Ancobon have not been systematically studied in pediatric patients. A small number of neonates have been treated with 25 to 200 mg/kg/day of flucytosine, with and without the addition of amphotericin B, for systemic candidiasis. No unexpected adverse reactions were reported in these patients.  It should be noted, however, that hypokalemia and acidemia were reported in one patient who received flucytosine in combination with amphotericin B, and anemia was observed in a second patient who received flucytosine alone.  Transient thrombocytopenia was noted in two additional patients, one of whom also received amphotericin B.



Adverse Reactions


The adverse reactions which have occurred during treatment with Ancobon are grouped according to organ system affected.


Cardiovascular: Cardiac arrest, myocardial toxicity, ventricular dysfunction.


Respiratory: Respiratory arrest, chest pain, dyspnea.


Dermatologic: Rash, pruritus, urticaria, photosensitivity.


Gastrointestinal: Nausea, emesis, abdominal pain, diarrhea, anorexia, dry mouth, duodenal ulcer, gastrointestinal hemorrhage, acute hepatic injury with possible fatal outcome in debilitated patients, hepatic dysfunction, jaundice, ulcerative colitis, bilirubin elevation, increased hepatic enzymes.


Genitourinary: Azotemia, creatinine and BUN elevation, crystalluria, renal failure.


Hematologic: Anemia, agranulocytosis, aplastic anemia, eosinophilia, leukopenia, pancytopenia, thrombocytopenia.


Neurologic: Ataxia, hearing loss, headache, paresthesia, parkinsonism, peripheral neuropathy, pyrexia, vertigo, sedation, convulsions.


Psychiatric: Confusion, hallucinations, psychosis.


Miscellaneous: Fatigue, hypoglycemia, hypokalemia, weakness, allergic reactions, Lyell’s syndrome.



Overdosage


There is no experience with intentional overdosage. It is reasonable to expect that overdosage may produce pronounced manifestations of the known clinical adverse reactions. Prolonged serum concentrations in excess of 100 µg/mL may be associated with an increased incidence of toxicity, especially gastrointestinal (diarrhea, nausea, vomiting), hematologic (leukopenia, thrombocytopenia) and hepatic (hepatitis).


In the management of overdosage, prompt gastric lavage or the use of an emetic is recommended. Adequate fluid intake should be maintained, by the intravenous route if necessary, since Ancobon is excreted unchanged via the renal tract. The hematologic parameters should be monitored frequently; liver and kidney function should be carefully monitored. Should any abnormalities appear in any of these parameters, appropriate therapeutic measures should be instituted.


Since hemodialysis has been shown to rapidly reduce serum concentrations in anuric patients, this method may be considered in the management of overdosage.



Ancobon Dosage and Administration


The usual dosage of Ancobon is 50 to 150 mg/kg/day administered in divided doses at 6-hour intervals. Nausea or vomiting may be reduced or avoided if the capsules are given a few at a time over a 15-minute period. If the BUN or the serum creatinine is elevated, or if there are other signs of renal impairment, the initial dose should be at the lower level (see WARNINGS).


Ancobon should be used in combination with amphotericin B for the treatment of systemic candidiasis and cryptococcosis because of the emergence of resistance to Ancobon (See MICROBIOLOGY).



How is Ancobon Supplied


Capsules, 250 mg (gray and green), imprinted Ancobon® 250 ICN, bottles of 100 (NDC 0187-3554-10). Capsules, 500 mg (gray and white), imprinted Ancobon® 500 ICN, bottles of 100 (NDC 0187-3555-10).


Store at 25°C (77°F); excursions permitted to 15°C - 30°C (59°F - 86°F).



REFERENCES


1: Clinical and Laboratory Standards Institute. Reference Method for Broth Dilution Antifungal Susceptibility Testing of Yeasts; Approved Standard-Second Edition. NCCLS Document M27-A2, 2002 Volume 22, No 15, NCCLS, Wayne, PA, August 2002.




Valeant Pharmaceuticals International

3300 Hyland Avenue

Costa Mesa, California 92626

714-545-0100


3355497EX06








Ancobon 
flucytosine  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)0187-3554
Route of AdministrationORALDEA Schedule    












































INGREDIENTS
Name (Active Moiety)TypeStrength
flucytosine (flucytosine)Active250 MILLIGRAM  In 1 CAPSULE
corn starchInactive 
lactoseInactive 
talcInactive 
butylparabenInactive 
methylparabenInactive 
propylparabenInactive 
sodium propionateInactive 
black iron oxcideInactive 
FD&C Blue No. 1Inactive 
FD&C Yellow No. 6Inactive 
FD&C Yellow No. 10Inactive 
titanium dioxideInactive 






















Product Characteristics
ColorGRAY, GREENScoreno score
ShapeCAPSULESize18mm
FlavorImprint CodeAncobon;250;ICN
Contains      
CoatingfalseSymbolfalse










Packaging
#NDCPackage DescriptionMultilevel Packaging
10187-3554-10100 CAPSULE In 1 BOTTLENone






Ancobon 
flucytosine  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)0187-3555
Route of AdministrationORALDEA Schedule    



































INGREDIENTS
Name (Active Moiety)TypeStrength
flucytosine (flucytosine)Active500 MILLIGRAM  In 1 CAPSULE
corn starchInactive 
lactoseInactive 
talcInactive 
butylparabenInactive 
methylparabenInactive 
propylparabenInactive 
sodium propionateInactive 
black iron oxcideInactive 
titanium dioxideInactive 






















Product Characteristics
ColorGRAY, WHITEScoreno score
ShapeCAPSULESize18mm
FlavorImprint CodeAncobon;500;ICN
Contains      
CoatingfalseSymbolfalse










Packaging
#NDCPackage DescriptionMultilevel Packaging
10187-3555-10500 CAPSULE In 1 BOTTLENone

Revised: 03/2007Valeant Pharmaceuticals, Inc.

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