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. Abdominal or stomach pain or tenderness
  2. clay colored stools
  3. dark urine
  4. decreased appetite
  5. diarrhea, severe
  6. fever
  7. headache
  8. itching or skin rash
  9. loss of appetite
  10. nausea and vomiting
  11. swelling of the feet or lower legs
  12. unusual tiredness or weakness
  13. yellow eyes or skin

Less common

  1. Burning, dry, or itching eyes
  2. chest pain
  3. chills
  4. cough
  5. difficult breathing
  6. discharge or excessive tearing
  7. dry eyes
  8. general feeling of discomfort or illness
  9. redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
  10. thickening of bronchial secretions
  11. troubled breathing
  12. troubled or quick, shallow breathing


  1. Blistering, peeling, or loosening of the skin
  2. bloody, black, or tarry stools
  3. eye redness, irritation, or pain
  4. heartburn
  5. indigestion
  6. joint or muscle pain
  7. red skin lesions, often with a purple center
  8. severe abdominal or stomach pain, cramping, or burning
  9. sore throat
  10. sores, ulcers, or white spots in the mouth or on the lips
  11. vomiting of material that looks like coffee grounds, 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

  1. Redness or soreness around fingernails or loosening of the fingernails

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.