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 or nurse immediately if any of the following side effects occur:

More common

  1. Anxiety
  2. being forgetful
  3. change in walking and balance
  4. changes in patterns and rhythms of speech
  5. clumsiness or unsteadiness
  6. confusion
  7. decrease in the frequency of urination
  8. decrease in urine volume
  9. delusions
  10. dementia
  11. difficulty in passing urine (dribbling)
  12. difficulty with speaking
  13. feeling unusually cold
  14. painful urination
  15. problems with speech or speaking
  16. seeing, hearing, or feeling things that are not there
  17. shakiness and unsteady walk
  18. shakiness in the legs, arms, hands, or feet
  19. shivering
  20. slurred speech
  21. thoughts of killing oneself
  22. trembling or shaking of the hands or feet
  23. uncontrolled eye movements
  24. unsteadiness, trembling, or other problems with muscle control or coordination

Less common

  1. Aggressive or angry
  2. chest pain
  3. chills
  4. confusion as to time, place, or person
  5. convulsions
  6. cough
  7. dark-colored urine
  8. dizziness
  9. drowsiness
  10. fainting
  11. fast heartbeat
  12. fearfulness, suspiciousness, or other mental changes
  13. feeling that others are watching you or controlling your behavior
  14. feeling that others can hear your thoughts
  15. fever
  16. general feeling of illness
  17. holding false beliefs that cannot be changed by fact
  18. lightheadedness
  19. muscle spasm or jerking of all extremities
  20. muscle stiffness
  21. rapid, shallow breathing
  22. severe mood or mental changes
  23. shortness of breath
  24. sneezing
  25. sore throat
  26. stiff neck or back
  27. tightness in the chest
  28. troubled breathing
  29. trouble in concentration
  30. trouble in sleeping
  31. unusual behavior unusual excitement, nervousness, or restlessness
  32. unusual tiredness or weakness
  33. wheezing


  1. Actions that are out of control
  2. changes in behavior
  3. irritability
  4. talking, feeling, and acting with excitement

Incidence not known

  1. Large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

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

Symptoms of overdose

  1. Decreased awareness or responsiveness
  2. severe sleepiness

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. Blurred vision
  2. crawling feelings
  3. diarrhea
  4. dizziness
  5. dizziness or lightheadedness
  6. excessive muscle tone, tension, or tightness
  7. feeling of constant movement of self or surroundings
  8. headache
  9. itching
  10. lack or loss of strength
  11. loss of appetite
  12. loss of memory
  13. nausea
  14. pain in the arms or legs
  15. problems with memory
  16. sensation of spinning
  17. sleepiness or unusual drowsiness
  18. vomiting
  19. weight loss

Less common

  1. Acid or sour stomach
  2. back pain
  3. bad, unusual, or unpleasant (after) taste
  4. belching
  5. bladder pain
  6. bloody or cloudy urine
  7. bruising
  8. change in taste
  9. congestion
  10. constipation
  11. continuing ringing or buzzing or other unexplained noise in the ears
  12. crying
  13. dehydration
  14. depersonalization
  15. depression
  16. difficulty seeing at night
  17. difficulty with moving
  18. double vision
  19. dry mouth
  20. dry skin
  21. dysphoria
  22. euphoria
  23. fainting
  24. frequent urge to urinate
  25. hearing loss
  26. heartburn
  27. hoarseness
  28. increased sensitivity of the eyes to sunlight
  29. increased sensitivity to pain or touch
  30. indigestion
  31. loss of bladder control
  32. loss of taste
  33. lung disorder
  34. nerve pain
  35. pain in the joints
  36. pain or tenderness around the eyes and cheekbones
  37. pale skin
  38. pounding in the ears
  39. quick to react or overreact emotionally
  40. rapidly changing moods
  41. red, scaly, swollen, or peeling areas of the skin
  42. redness or pain at the catheter site
  43. runny nose
  44. severe muscle stiffness
  45. shortness of breath or troubled breathing
  46. sleeplessness
  47. slow or fast heartbeat
  48. stomach discomfort, upset, or pain
  49. stuffy nose
  50. sweating
  51. swelling or redness in the joints
  52. tender, swollen glands in the neck
  53. tightness of the chest or wheezing
  54. trouble with swallowing
  55. unusual bleeding or bruising
  56. unusual tiredness or weakness
  57. voice changes
  58. warmth on the skin
  59. weakness or heaviness in the legs

Incidence not known

  1. Burning sensation on the skin
  2. flaking and falling off of skin
  3. skin blisters
  4. sores on the skin

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.