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6-Thioguanine, 6-TG, TG, Tioguanine, 2-Amino-6-Mercaptopurine
Often used for:
Thioguanine is a type of chemotherapy. It works by slowing or stopping the growth of cells.
Patients may differ in how slowly or quickly their body breaks down thioguanine due to the function of certain enzymes. A genetic test may be performed to see how well a patient’s enzymes function. Patients who break down thioguanine more slowly may receive a lower dose of the medicine. Read more about thiopurine methyltransferase (TPMT) and medicines.
May be taken as a tablet by mouth
May be taken as a liquid by mouth
Not all patients who take thioguanine will experience these side effects. Common side effects are in bold, but there may be others. Please report all suspected side effects to your doctor or pharmacist.
Some patients may experience long-term or late effects of treatment that may continue or develop months or years after treatment ends. Possible late effects due to thioguanine include:
Be sure to discuss these and other recommendations with your doctor or pharmacist.