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Thioguanine is a cancer (antineoplastic) medication. Thioguanine interferes with the growth of cancer cells and slows their growth and spread in the body.
Thioguanine is used to treat blood cancer (acute non-lymphocytic leukemia).
Thioguanine may also be used for purposes other than those listed in this medication guide.
If you experience any of the following serious side effects, seek emergency medical attention or contact your doctor immediately:
Other less serious side effects may be more likely to occur. Talk to your doctor if you experience
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.
Thioguanine should only be administered under the supervision of a qualified healthcare provider experienced in the use of cancer chemotherapeutic agents.
Serious side effects have been reported with the use of thioguanine including: allergic reactions (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); decreased bone marrow function and blood problems (extreme fatigue; easy bruising or bleeding; black, bloody or tarry stools; fever or chills; or sore throat); liver problems (yellowing of the skin or eyes, abdominal pain, nausea); severe nausea, vomiting, diarrhea, loss of appetite, or sores in the mouth; and others. Talk to your doctor about the possible side effects from treatment with thioguanine.
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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