Pyrimethamine is used to treat malaria or toxoplasmosis. It is usually taken with a sulfonamide. Discontinue if rash occurs.

Fansidar Overview


Pyrimethamine is a prescription medication used to malaria or toxoplasmosis, a disease caused by parasites. Pyrimethamine belongs to a group of drugs called diaminopyrimidines. These help to fight against parasites.

This medication is comes in tablet form and is taken up to 2 times a day, with or without food. 

Common side effects of pyrimethamine include anorexia, vomiting, or anemia. 

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What are you taking Fansidar for?

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  • Other
  • Aids-related Opportunistic Infections
  • Malaria, Falciparum

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  • A couple weeks
  • A month or so
  • A few months
  • A year or so
  • Two years or more

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Uses of Fansidar

Pyrimethamine is a prescription medication used to prevent and treat malaria. It is also used to treat toxoplasmosis, a disease caused by parasites. This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information. 

Fansidar Drug Class

Fansidar is part of the drug class: