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(pegaspargase) Intravenous or Intramuscular Injection
Oncaspar® (pegaspargase) is L-asparaginase (L-asparagine amidohydrolase) that is covalently conjugated to monomethoxypolyethylene glycol (mPEG). L-asparaginase is a tetrameric enzyme that is produced endogenously by E. coli and consists of identical 34.5 kDa subunits. Approximately 69 to 82 molecules of mPEG are linked to L-asparaginase; the molecular weight of each mPEG molecule is about 5 kDa. Oncaspar® activity is expressed in International Units. One International Unit of L-asparaginase is defined as the amount of enzyme required to generate 1 micromole of ammonia per minute at pH 7.3 and 37°C.
Oncaspar® is supplied as a clear, colorless, preservative-free, isotonic sterile solution in phosphate-buffered saline, pH 7.3. Each milliliter contains 750 ± 150 International Units of pegaspargase, dibasic sodium phosphate, USP (5.58 mg), monobasic sodium phosphate, USP, (1.20 mg) and sodium chloride, USP (8.50 mg) in water for injection, USP.
What are the possible side effects of pegaspargase (Oncaspar)?
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 at once if you have any of these serious side effects:
- severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate;
- sudden numbness or weakness, especially on one side of the body;
- sudden headache, confusion, problems with vision, speech, or balance;
- pain or swelling in one or both legs;
- fever, chills, body aches, flu...
What are the precautions when taking pegaspargase (Oncaspar)?
Before using pegaspargase, tell your doctor or pharmacist if you are allergic to it; or to L-asparaginase; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: history of a serious reaction to L-asparaginase (e.g., bleeding, blood clots, pancreatitis), diabetes, clotting/bleeding disorders, liver disease, pancreatitis.
Do not have immunizations/vaccinations without the consent of your doctor, and avoid contact with people who have recently received oral polio vaccine or flu vaccine inhaled through the nose.
Wash your hands well to prevent the...
Last reviewed on RxList: 5/2/2014
This monograph has been modified to include the generic and brand name in many instances.
Additional Oncaspar Information
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