Pyrimethamine (Oral Route)

Free

E-Newsletters

Subscribe to receive the latest updates on health topics. About our newsletters

  • Housecall
  • Alzheimer's caregiving
  • Living with cancer

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Less common
  • Black, tarry stools
  • Blood in urine or stools
  • Cough or hoarseness
  • Fever or chills
  • Irritation or soreness of tongue
  • Lower back or side pain
  • Painful or difficult urination
  • Pinpoint red spots on skin
  • Unusual bleeding or bruising
Rare
  • Bleeding or crusting sores on lips
  • Chest pain or discomfort
  • Muscle cramps or pain
  • Redness, blistering, peeling, or loosening of skin
  • Skin rash
  • Sores, ulcers, and/or white spots in mouth
  • Sore throat
  • Unusual tiredness or weakness
Frequency not known
  • Blood in urine
  • Diarrhea
  • Difficulty swallowing
  • Dizziness
  • Fainting spells
  • Fast, slow, or irregular heartbeat
  • Hives
  • Itching
  • Joint or muscle pain
  • Lightheadedness
  • Pale skin
  • Pounding or rapid pulse
  • Puffiness or swelling of the eyelids or around the eyes, face, lips or tongue
  • Rapid breathing
  • Red, irritated eyes
  • Red skin lesions, often with a purple center
  • Shortness of breath
  • Swollen glands
  • Tightness in chest
  • Unexplained bleeding or bruising
  • Wheezing
Symptoms of overdose
  • Abdominal or stomach pain
  • Convulsions (seizures)
  • Increased excitability
  • Vomiting (severe and continuing)

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common
  • Diarrhea
  • Loss of appetite
  • Nausea
  • Vomiting

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Precautions
DR601175 Portions of this document last updated: Nov. 1, 2011

Source: Drug Information provided by: Micromedex

Copyright © 2012 Thomson Healthcare Inc. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.

Advertisement


Text Size: smaller largerlarger