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:

Rare

  1. Anxiety
  2. bleeding gums
  3. blistering, peeling, or loosening of the skin
  4. blood in the urine or stools
  5. bloody, black, or tarry stools
  6. cough
  7. difficulty breathing
  8. discouragement
  9. fast, irregular, pounding, or racing heartbeat or pulse
  10. feeling sad or empty
  11. irritability
  12. lack of appetite
  13. loss of interest or pleasure
  14. noisy breathing
  15. pinpoint red spots on the skin
  16. seeing, hearing, or feeling things that are not there
  17. seizures
  18. swelling around the eyes
  19. tightness in the chest
  20. trouble concentrating
  21. trouble sleeping
  22. unusual bleeding or bruising

Incidence not known

  1. Agitation
  2. blistering, peeling, or loosening of the skin
  3. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  4. chest pain
  5. chills
  6. clay-colored stools
  7. dark urine
  8. diarrhea
  9. difficulty swallowing
  10. dizziness or fainting
  11. fever
  12. general feeling of tiredness or weakness
  13. headache
  14. high fever
  15. hives, itching, skin rash
  16. hoarseness
  17. joint or muscle pain
  18. large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals
  19. light-colored stools
  20. lower back or side pain
  21. nausea
  22. painful or difficult urination
  23. pale skin
  24. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  25. red skin lesions, often with a purple center
  26. red, irritated eyes
  27. sore throat
  28. sores, ulcers, or white spots in the mouth or on the lips
  29. stomach pain
  30. swollen glands
  31. unpleasant breath odor
  32. unusual tiredness or weakness
  33. upper right abdominal pain
  34. vomiting of blood
  35. yellow eyes or skin

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

  1. Difficulty having a bowel movement

Rare

  1. Bad, unusual, or unpleasant (after) taste
  2. bone or muscle pain
  3. change in taste
  4. continuing ringing or buzzing or other unexplained noise in the ears
  5. decreased interest in sexual intercourse
  6. difficulty in moving
  7. dry mouth
  8. dry skin
  9. feeling of warmth
  10. hearing loss
  11. inability to have or keep an erection
  12. lack or loss of strength
  13. loss in sexual ability, desire, drive, or performance
  14. muscle pain or stiffness
  15. redness of the face, neck, arms and occasionally, upper chest
  16. redness of the white part of the eyes
  17. stomach discomfort
  18. unusual drowsiness

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.