Cytarabine for Injection USP, commonly known as ara-C, an antineoplastic for intravenous, intrathecal, or subcutaneous administration, contains sterile lyophilized Cytarabine (1-β-D-Arabinofuranosylcytosine). Cytarabine is an odorless, white to off-white, crystalline powder which is freely soluble in water and slightly soluble in alcohol and in chloroform. Cytarabine is a synthetic nucleoside which differs from the normal nucleosides cytidine and deoxycytidine in that the sugar moiety is arabinose rather than ribose or deoxyribose. Its structural formula is:

Cytarabine for Injection USP is available in vials containing 100 mg, 500 mg, 1 g, and 2 g Cytarabine. When necessary, the pH of Cytarabine for Injection USP was adjusted with hydrochloric acid and/or sodium hydroxide. Reconstitute with Bacteriostatic Water for Injection USP with benzyl alchohol for intravenous and subcutaneous use only.


Only physicians experienced in cancer chemotherapy should use Cytarabine for Injection.
For induction therapy, patients should be treated in a facility with laboratory and supportive resources sufficient to monitor drug tolerance and protect and maintain a patient compromised by drug toxicity. The main toxic effect of Cytarabine is bone marrow suppression with leukopenia, thrombocytopenia, and anemia. Less serious toxicity includes nausea, vomiting, diarrhea and abdominal pain, oral ulceration, and hepatic dysfunction.
The physician must judge possible benefit to the patient against known toxic effects of this drug in considering the advisability of therapy with Cytarabine. Before making this judgement or beginning treatment, the physician should be familiar with the following text.

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Cytarabine Uses
This medication is usually given by injection into a vein by a health care professional. It may also be given by other methods of injection depending upon your medical condition.
Cytarabine Precautions
Using cytarabine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems.
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