Side Effects

Drug information provided by: Merative, Micromedex®

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.

Stop taking this medicine and get emergency help immediately if any of the following effects occur:


  1. Convulsions (seizures)
  2. difficult or unusually fast breathing
  3. fast heartbeat or irregular pulse
  4. high fever
  5. high or low (irregular) blood pressure
  6. increased sweating
  7. loss of bladder control
  8. severe muscle stiffness
  9. unusually pale skin
  10. unusual tiredness or weakness

Check with your doctor immediately if any of the following side effects occur:

Incidence not known

  1. Abdominal or stomach pain
  2. black, tarry stools
  3. bleeding gums
  4. blood in urine or stools
  5. bloody nose
  6. blurred vision
  7. chest pain or discomfort
  8. chills
  9. clay-colored stools
  10. confusion as to time, place, or person
  11. cough or hoarseness
  12. dark urine
  13. decreased awareness or responsiveness
  14. difficulty or troubled breathing
  15. double vision
  16. fast, pounding, or irregular heartbeat or pulse
  17. fever with or without chills
  18. fixed position of eye
  19. headache
  20. heavier menstrual periods
  21. high fever
  22. holding false beliefs that cannot be changed by fact
  23. hyperexcitability
  24. increased or decreased blood pressure
  25. increased sweating
  26. irregular, fast or slow, or shallow breathing
  27. itching
  28. large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  29. lightheadedness, dizziness, or fainting
  30. loss of appetite
  31. loss of bladder control
  32. lower back or side pain
  33. mimicry of speech or movements
  34. mutism
  35. nasal stuffiness
  36. nausea
  37. negativism
  38. nightmares
  39. noisy breathing
  40. not breathing
  41. painful or difficult urination
  42. pale or blue lips, fingernails, or skin
  43. peculiar postures or movements, mannerisms or grimacing
  44. pinpoint red spots on skin
  45. seeing double
  46. seeing, hearing, or feeling things that are not there
  47. seizures
  48. severe muscle stiffness
  49. severe sleepiness
  50. shortness of breath
  51. skin rash
  52. slow or irregular heartbeat
  53. sore throat
  54. sores, ulcers, or white spots on lips or in mouth
  55. sticking out of tongue
  56. swollen glands
  57. tightness in chest
  58. tremors
  59. uncontrolled twisting movements of neck
  60. unpleasant breath odor
  61. unusual bleeding or bruising
  62. unusual excitement, nervousness, or restlessness
  63. unusual tiredness or weakness
  64. vomiting of blood
  65. wheezing
  66. yellow eyes or skin

Symptoms of overdose

  1. Discouragement
  2. dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
  3. dry mouth
  4. excessive muscle tone
  5. feeling of warmth
  6. feeling sad or empty
  7. irritability
  8. lack of appetite
  9. loss of interest or pleasure
  10. muscle tension or tightness
  11. overactive reflexes
  12. pupils of eyes large and not moving or responding to light
  13. redness of the face, neck, arms and occasionally, upper chest
  14. shakiness and unsteady walk
  15. sudden death
  16. trouble concentrating
  17. trouble sleeping
  18. unconsciousness
  19. unsteadiness, trembling, or other problems with muscle control or coordination
  20. unusual paleness

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:

Incidence not known

  1. blistering, crusting, irritation, itching, or reddening of skin
  2. continuing ringing or buzzing or other unexplained noise in ears
  3. cracked, dry, scaly skin
  4. dizziness
  5. drowsiness
  6. excitation
  7. false or unusual sense of well-being
  8. hearing loss
  9. hives or welts
  10. increased sensitivity of skin to sunlight
  11. lack of coordination
  12. loss of strength or energy
  13. muscle pain or weakness
  14. redness or other discoloration of skin
  15. relaxed and calm
  16. sunburn
  17. swelling
  18. unable to sleep
  19. vomiting

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.