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Cytoxan

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Cytoxan

CYTOXAN®
(cyclophosphamide) for Injection, USP

Cytoxan

DRUG DESCRIPTION

Cytoxan (cyclophosphamide) is a synthetic antineoplastic drug chemically related to the nitrogen mustards. The chemical name for cyclophosphamide is 2-[bis(2-chloroethyl)amino]tetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide monohydrate, and has the following structural formula:

CYCLOPHOSPHAMIDE Structural Formula Illustration

Cyclophosphamide has a molecular formula of C7H15Cl2N2O2P•H2O and a molecular weight of 279.1. Cyclophosphamide is soluble in water, saline, or ethanol.

Cyclophosphamide for Injection, USP is a sterile white cake available as 500 mg, 1 g, and 2 g strength vials.

  • 500 mg vial contains 534.5 mg cyclophosphamide monohydrate equivalent to 500 mg cyclophosphamide and 375 mg mannitol
  • 1 g vial contains 1069.0 mg cyclophosphamide monohydrate equivalent to 1 g cyclophosphamide and 750 mg mannitol
  • 2 g vial contains 2138.0 mg cyclophosphamide monohydrate equivalent to 2 g cyclophosphamide and 1500 mg mannitol

Cyclophosphamide Tablets, USP are for oral use and contain 25 mg or 50 mg cyclophosphamide (anhydrous). Inactive ingredients in Cyclophosphamide Tablets are: acacia, FD&C Blue No. 1, D&C Yellow No. 10 Aluminum Lake, lactose, magnesium stearate, starch, stearic acid and talc.

What are the possible side effects of cyclophosphamide (Cytoxan, Cytoxan Lyophilized, Neosar)?

If you experience any of the following serious side effects, seek emergency medical attention or contact your doctor immediately:

  • an allergic reaction (shortness of breath; closing of your throat; difficulty breathing; swelling of your lips, face, or tongue; or hives);
  • blood in the urine;
  • black or tarry stools;
  • painful or difficult urination;
  • signs of infection such as fever; chills, or sore throat;
  • jaundice (yellowing of the skin or eyes);
  • lower back or side pain;
  • chest pain, difficulty...

Read All Potential Side Effects and See Pictures of Cytoxan »

What are the precautions when taking cyclophosphamide (Cytoxan)?

Before taking cyclophosphamide, tell your doctor or pharmacist if you are allergic to it; or to other chemotherapy drugs (e.g., busulfan, chlorambucil); 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.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: decreased bone marrow function (e.g., anemia, leukopenia, thrombocytopenia).

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, kidney disease, surgery to remove your adrenal glands.

Do not have immunizations/vaccinations without...

Read All Potential Precautions of Cytoxan »

Last reviewed on RxList: 6/13/2013
This monograph has been modified to include the generic and brand name in many instances.

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Cytoxan - User Reviews

Cytoxan User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Cytoxan sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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