Generic Name: Mitomycin (mye-toe-MYE-sin)Brand Name: Mutamycin

Mutamycin may cause bone marrow suppression, which may cause severe blood problems such as low platelet levels (thrombocytopenia) and low white blood cell levels (leukopenia). These blood problems may increase your risk of developing severe bleeding or a severe and possibly fatal infection. Mutamycin may also increase your risk of developing hemolytic uremic syndrome (HUS), which may cause problems such as hemolytic anemia, low platelet count, and permanent kidney failure. HUS may occur at any time during treatment. Higher doses may increase your risk for developing this side effect. Blood transfusions may make the symptoms of this syndrome worse. Notify your doctor immediately if you develop symptoms of an infection (eg, fever, chills, persistent sore throat), fatigue, unusual bleeding or bruising, or a change in the amount of urine produced.

Mutamycin is used for:

Treating cancer of the stomach or pancreas in combination with other medicines. It may also be used to reduce the severity of these cancers when they have not responded to other treatments. It may also be used for other conditions as determined by your doctor.

Mutamycin is an antibiotic that has been shown to have action against tumors. It works by blocking growth of the cancer cell.

Do NOT use Mutamycin if:

  • you are allergic to or have had an unusual reaction to any ingredient in Mutamycin
  • you have low blood platelet levels (thrombocytopenia), low white blood cell levels (leukopenia), blood clotting problems, or bleeding problems
  • you have active severe bleeding
  • you have shingles or chickenpox

Contact your doctor or health care provider right away if any of these apply to you.

Before using Mutamycin :

Some medical conditions may interact with Mutamycin . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have kidney problems, breathing problems, or bone marrow problems

Some MEDICINES MAY INTERACT with Mutamycin . Tell your health care provider if you are taking any other medicines, especially any of the following:

  • Vinca alkaloids (eg, vincristine) or other cancer medicines because lung problems, such as severe shortness of breath, may occur
  • Tamoxifen because risk of anemia, low blood platelet levels, or hemolytic uremic syndrome may be increased
  • Doxorubicin because risk of heart failure may be increased

This may not be a complete list of all interactions that may occur. Ask your health care provider if Mutamycin may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Mutamycin :

Use Mutamycin as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Mutamycin is usually administered as an injection at your doctor's office, hospital, or clinic. If you are using Mutamycin at home, carefully follow the injection procedures taught to you by your health care provider.
  • If nausea, vomiting, or loss of appetite occur, ask your doctor or pharmacist for ways to lessen these effects.
  • Mutamycin may cause a serious reaction if it comes in contact with your skin. If this happens, wash the area with soap and water for approximately 15 minutes. Contact your doctor as soon as possible. The use of gloves while handling Mutamycin is recommended.
  • If Mutamycin contains particles or is discolored, or if the vial is cracked or damaged in any way, do not use it.
  • Keep this product, as well as syringes and needles, out of the reach of children and away from pets. Do not reuse needles, syringes, or other materials. Dispose of properly after use. Ask your doctor or pharmacist to explain local regulations for proper disposal.
  • If you miss a dose of Mutamycin , contact your doctor immediately.

Ask your health care provider any questions you may have about how to use Mutamycin .

Important safety information:

  • Mutamycin may reduce the number of clot-forming cells (platelets) in your blood. To prevent bleeding, avoid situations in which bruising or injury may occur. Report any unusual bleeding, bruising, blood in stools, or dark, tarry stools to your doctor.
  • Mutamycin may lower your body's ability to fight infection. Prevent infection by avoiding contact with people with colds or other infections. Notify your doctor of any signs of infection, including fever, sore throat, rash, or chills. Do not touch your eyes or the inside of your nose unless you have thoroughly washed your hands first.
  • Avoid vaccinations with live virus vaccines (eg, measles, mumps, oral polio) while you are taking Mutamycin . Talk to your doctor before having any vaccinations while you are using Mutamycin .
  • Before you have any medical or dental treatments, emergency care, or surgery, tell the doctor or dentist that you are using Mutamycin .
  • LAB TESTS, including platelet count, complete blood cell count, and kidney function tests, may be performed to monitor your progress or to check for side effects. Be sure to keep all doctor and lab appointments.
  • Use Mutamycin with extreme caution in CHILDREN. Safety and effectiveness have not been confirmed.
  • PREGNANCY and BREAST-FEEDING: It is unknown if Mutamycin can cause harm to the fetus. If you become pregnant while taking Mutamycin , discuss with your doctor the benefits and risks of using Mutamycin during pregnancy. It is unknown if Mutamycin is excreted in breast milk. Do not breast-feed while taking Mutamycin .

Possible side effects of Mutamycin :

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Hair loss; loss of appetite; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; decreased urination; dizziness; dry cough; fever, chills, or sore throat; pain, redness, or swelling at the injection site; shortness of breath; sores or swelling of the mouth, lips, hands, or feet; unusual bruising or bleeding; unusual tiredness or weakness.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (, or emergency room immediately.

Proper storage of Mutamycin :

Mutamycin is usually handled and stored by a health care provider. If you are using Mutamycin at home, store Mutamycin as directed by your pharmacist or health care provider.

General information:

  • If you have any questions about Mutamycin , please talk with your doctor, pharmacist, or other health care provider.
  • Mutamycin is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.

This information is a summary only. It does not contain all information about Mutamycin . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.

  • Mutamycin Advanced Consumer (Micromedex) - Includes Dosage Information
  • Mutamycin Concise Consumer Information (Cerner Multum)
  • Mutamycin Prescribing Information (FDA)
  • Mitomycin Professional Patient Advice (Wolters Kluwer)
  • Mitomycin Prescribing Information (FDA)