Side Effects

Drug information provided by: IBM 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.

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

More common

  1. Being forgetful
  2. changes in patterns and rhythms of speech
  3. clumsiness or unsteadiness
  4. difficulty with coordination
  5. discouragement
  6. drowsiness
  7. feeling sad or empty
  8. irritability
  9. lack of appetite
  10. lightheadedness
  11. loss of interest or pleasure
  12. relaxed and calm
  13. shakiness and unsteady walk
  14. sleepiness
  15. slurred speech
  16. tiredness
  17. trouble concentrating
  18. trouble performing routine tasks
  19. trouble sleeping
  20. trouble speaking
  21. unsteadiness, trembling, or other problems with muscle control or coordination
  22. unusual tiredness or weakness

Less common

  1. Blurred vision
  2. body aches or pain
  3. burning, crawling, itching, numbness, prickling, "pins and needles, or tingling feelings
  4. changes in behavior
  5. chills
  6. clay-colored stools
  7. confusion about identity, place, and time
  8. cough
  9. dark urine
  10. decrease in frequency of urination
  11. decrease in urine volume
  12. diarrhea
  13. difficult or labored breathing
  14. difficulty in passing urine (dribbling)
  15. difficulty with concentration
  16. difficulty with moving
  17. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  18. dry mouth
  19. ear congestion
  20. environment seems unreal
  21. fainting
  22. feeling of unreality
  23. feeling warm
  24. fever
  25. general feeling of discomfort or illness
  26. headache
  27. inability to move the eyes
  28. inability to sit still
  29. increased blinking or spasms of the eyelid
  30. irregular heartbeats
  31. itching or rash
  32. joint pain
  33. lack or loss of self-control
  34. loss of bladder control
  35. loss of coordination
  36. loss of memory
  37. loss of voice
  38. mood or mental changes
  39. muscle aches, cramps, pain, stiffness, or weakness
  40. nausea
  41. need to keep moving
  42. painful urination
  43. problems with memory
  44. restlessness
  45. runny or stuffy nose
  46. seeing, hearing, or feeling things that are not there
  47. seizures
  48. sense of detachment from self or body
  49. shaking
  50. shivering
  51. sneezing
  52. sore throat
  53. sticking out of the tongue
  54. stomach pain
  55. sweating
  56. swollen joints
  57. talkativeness
  58. tightness in the chest
  59. trouble with balance
  60. twitching, twisting, or uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
  61. uncontrolled twisting movements of the neck, trunk, arms, or legs
  62. unpleasant breath odor
  63. unusual dullness or feeling of sluggishness
  64. unusual facial expressions
  65. unusually deep sleep
  66. unusually long duration of sleep
  67. vomiting of blood
  68. yellow eyes or skin


  1. Actions that are out of control
  2. attack, assault, or force
  3. chest pain
  4. continuing ringing or buzzing or other unexplained noise in the ears
  5. decreased awareness or responsiveness
  6. deep or fast breathing with dizziness
  7. ear pain
  8. false or unusual sense of well-being
  9. fast, irregular, pounding, or racing heartbeat or pulse
  10. feeling jittery
  11. feeling unusually cold
  12. generalized slowing of mental and physical activity
  13. hearing loss
  14. hoarseness
  15. lack of feeling or emotion
  16. loss of control of the legs
  17. loss of strength or energy
  18. nightmares
  19. numbness of the feet, hands, and around mouth
  20. severe sleepiness
  21. shakiness in the legs, arms, hands, or feet
  22. sleep talking
  23. swelling
  24. talking, feeling, and acting with excitement
  25. thoughts of killing oneself
  26. uncaring
  27. unusual weak feeling
  28. voice changes

Incidence not known

  1. Light-colored stools
  2. upper right abdominal or stomach pain

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

  1. Change in consciousness
  2. confusion
  3. lack of coordination
  4. loss of consciousness
  5. sleepiness or unusual drowsiness

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. Absent, missed, or irregular menstrual periods
  2. decreased appetite
  3. decreased interest in sexual intercourse
  4. decreased sexual performance or desire abnormal ejaculation
  5. difficulty having a bowel movement (stool)
  6. inability to have or keep an erection
  7. increased appetite
  8. increased in sexual ability, desire, drive, or performance
  9. increased interest in sexual intercourse
  10. increased weight
  11. loss in sexual ability, desire, drive, or performance
  12. stopping of menstrual bleeding
  13. watering of the mouth
  14. weight loss

Less common

  1. Blistering, crusting, irritation, itching, or reddening of the skin
  2. change in taste bad unusual or unpleasant (after) taste
  3. cracked, dry, or scaly skin
  4. double vision
  5. feeling of warmth
  6. heavy bleeding
  7. menstrual changes
  8. pelvic pain
  9. redness of the face, neck, arms, and occasionally, upper chest
  10. seeing double
  11. stomach bloating and cramping
  12. sudden sweating
  13. unexplained runny nose or sneezing


  1. Acid or sour stomach
  2. belching
  3. bigger, dilated, or enlarged pupils (black part of the eye)
  4. change in color vision
  5. difficulty seeing at night
  6. feeling of constant movement of self or surroundings
  7. feeling of relaxation
  8. heartburn
  9. hives or welts
  10. increased sensitivity of the eyes to sunlight
  11. indigestion
  12. redness of the skin
  13. sensation of spinning
  14. stomach discomfort or upset

Incidence not known

  1. Blistering, peeling, or loosening of the skin
  2. red, irritated eyes
  3. red skin lesions, often with a purple center
  4. sores, ulcers, or white spots in the mouth or on the lips
  5. swelling of the breasts or breast soreness in both females and males
  6. unexpected or excess milk flow from the breasts

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.

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