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. Black, tarry stools
  2. bloating or swelling of the face, arms, hands, lower legs, or feet
  3. blurred or loss of vision
  4. body aches or pain
  5. chest pain or discomfort
  6. chills
  7. cough
  8. difficult or labored breathing
  9. difficulty in swallowing
  10. disturbed color perception
  11. double vision
  12. ear congestion
  13. fever
  14. halos around lights
  15. headache
  16. hoarseness
  17. increased sensitivity to pain or touch
  18. irregular heartbeat
  19. lightheadedness, dizziness, or fainting
  20. loss of voice
  21. lower back or side pain
  22. nasal congestion
  23. nerve pain
  24. night blindness
  25. overbright appearance of lights
  26. pain or burning in the throat
  27. painful or difficult urination
  28. pale skin
  29. rapid weight gain
  30. recurrent fainting
  31. runny or stuffy nose
  32. slow or irregular heartbeat
  33. sneezing
  34. sore throat
  35. sores, ulcers, or white spots on the lips or tongue or inside the mouth
  36. swelling
  37. tightness in the chest
  38. tunnel vision
  39. unusual bleeding or bruising
  40. unusual tiredness or weakness
  41. unusual weight gain or loss
  42. vomiting
  43. weakness in the arms, hands, legs, or feet

Less common

  1. Anxiety
  2. blue lips, fingernails, or skin
  3. clay-colored stools
  4. confusion
  5. dark urine
  6. dry mouth
  7. fast heartbeat
  8. flushed, dry skin
  9. fruit-like breath odor
  10. increased hunger
  11. increased thirst
  12. increased urination
  13. irregular, fast or slow, or shallow breathing
  14. itching, skin rash
  15. loss of appetite
  16. loss of consciousness
  17. nausea
  18. stomach pain or tenderness
  19. sweating
  20. swelling of the feet or lower legs
  21. 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:

More common

  1. Back pain
  2. belching
  3. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  4. change in taste
  5. constipation
  6. diarrhea
  7. heartburn
  8. increased weight
  9. indigestion
  10. loss of taste
  11. muscle spasm or weakness
  12. pain in the arms or legs
  13. stomach discomfort or upset
  14. trouble in walking
  15. unsteadiness or awkwardness
  16. weakness in the arms, hands, legs, or feet

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.