Cancer Home > Mercaptopurine 50 Mg

Adults and children who have a certain type of cancer may receive mercaptopurine (Purinethol®). The brand-name and generic versions come as tablets and are available in one strength (50 mg). Mercaptopurine is available by prescription only.
Your individual dosage will depend on a number of factors, such as:
  • Your weight
  • How you respond to and tolerate it
  • Other medications you are taking.
Mercaptopurine tablets are taken once daily, preferably in the evening and on an empty stomach. It is important to drink plenty of fluids to help stay hydrated. These tablets can also be made into a liquid suspension for people who have problems swallowing tablets.
(Click Mercaptopurine for an in-depth look at various topics on this prescription chemotherapy drug, including specific uses, how it works, potential side effects, and safety precautions to review before beginning treatment.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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