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Medications and Drugs

Brand Names: Daraprim

Generic Name: pyrimethamine (Pronunciation: PIR i METH a meen)

What is pyrimethamine (Daraprim)?

Pyrimethamine is an antiparasitic drug. It prevents the growth and reproduction of parasites.

Pyrimethamine is used to treat and prevent malaria. Pyrimethamine is also used in the treatment of toxoplasmosis.

Pyrimethamine may also be used for purposes other than those listed in this medication guide.

Daraprim 25 mg

round, white, imprinted with DARAPRIM A3A

What are the possible side effects of pyrimethamine (Daraprim)?

Stop taking pyrimethamine and seek emergency medical attention if you experience an allergic reaction (swelling of the lips, tongue, or face; difficulty breathing; closing of the throat; or hives) during treatment with pyrimethamine.

Stop taking pyrimethamine and seek medical attention at the first sign of a skin rash, sore throat, paleness of the skin, unusual bruising under the skin, or swelling of the tongue. These may be early symptoms of serious side effects of pyrimethamine.

Other, less serious side effects may be more likely to occur. Continue to take pyrimethamine and talk to your doctor if you experience

  • nausea, vomiting, or loss of appetite;
  • insomnia;
  • headache;
  • lightheadedness; or
  • dryness of the mouth.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about pyrimethamine (Daraprim)?

Stop taking pyrimethamine and seek medical attention at the first sign of a skin rash, sore throat, paleness of the skin, unusual bruising under the skin, or swelling of the tongue. These may be early symptoms of serious side effects of pyrimethamine.

Pyrimethamine may cause stomach upset or vomiting. Take each dose with food to lessen this side effect.



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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