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:

More common

  1. Chills
  2. clay-colored stools
  3. dark urine
  4. dizziness
  5. fever
  6. headache
  7. itching, skin rash
  8. loss of appetite
  9. nausea
  10. stomach pain
  11. unpleasant breath odor
  12. unusual tiredness or weakness
  13. vomiting of blood
  14. yellow eyes or skin

Incidence not known

  1. Black, tarry stools
  2. blistering, peeling, or loosening of the skin
  3. blood in the urine
  4. chest pain
  5. decreased appetite
  6. diarrhea
  7. gaseous abdominal or stomach pain
  8. joint or muscle pain
  9. pain in the groin or genitals
  10. painful or difficult urination
  11. recurrent fever
  12. red skin lesions, often with a purple center
  13. red, irritated eyes
  14. sharp back pain just below the ribs
  15. sore throat
  16. sores, ulcers, or white spots in the mouth or on the lips
  17. stomach fullness or tenderness
  18. swelling of the feet or lower legs
  19. swollen glands
  20. unusual bleeding or bruising

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.