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:

Incidence not known

  1. Black, tarry stools
  2. bleeding gums
  3. bloating
  4. blood in the urine or stools
  5. blurred vision
  6. chest pain
  7. chills
  8. clay-colored stools
  9. cold sweats
  10. confusion
  11. constipation
  12. cough
  13. dark urine
  14. decrease in the frequency of urination
  15. decrease in urine volume
  16. difficult or troubled breathing
  17. difficulty in passing urine (dribbling)
  18. dizziness
  19. dizziness, faintness, or lightheadedness when getting up from a lying or sitting position
  20. fainting
  21. fast or slow, pounding, or irregular heartbeat or pulse
  22. fever
  23. headache
  24. high fever
  25. increased sweating
  26. irregular, fast or slow, or shallow breathing
  27. lightheadedness
  28. loss of appetite
  29. loss of bladder control
  30. nausea
  31. nervousness
  32. painful or difficult urination
  33. pale or blue lips, fingernails, or skin
  34. pinpoint red spots on the skin
  35. pounding in the ears
  36. rash or itching
  37. seizures
  38. severe muscle stiffness
  39. shakiness in the legs, arms, hands, or feet
  40. sore throat
  41. sores, ulcers, or white spots on the lips or in the mouth
  42. stomach pain
  43. swollen glands
  44. tiredness
  45. trembling or shaking of the hands or feet
  46. unpleasant breath odor
  47. unusual bleeding or bruising
  48. unusual tiredness or weakness
  49. unusually pale skin
  50. vomiting
  51. vomiting of blood
  52. 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. Drowsiness

Incidence not known

  1. Anxiety
  2. blurred or loss of vision
  3. confusion about identity, place, and time
  4. disturbed color perception
  5. double vision
  6. dry mouth
  7. false or unusual sense of well-being
  8. halos around lights
  9. increased sensitivity of the skin to sunlight
  10. night blindness
  11. overbright appearance of lights
  12. redness or other discoloration of the skin
  13. relaxed and calm feeling
  14. restlessness
  15. seeing, hearing, or feeling things that are not there
  16. severe sunburn
  17. sleepiness or unusual drowsiness
  18. trouble sleeping
  19. tunnel vision

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.