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.

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

Less common

  1. Agitation
  2. chest pain or tightness
  3. chills
  4. cold sweats
  5. confusion
  6. difficulty with breathing
  7. dizziness, faintness, or lightheadedness when getting up from a lying or sitting position
  8. fast, pounding, or irregular heartbeat or pulse
  9. muscle pain or weakness
  10. skin rash


  1. Absence of or decrease in body movements
  2. bigger, dilated, or enlarged pupils (black part of the eye)
  3. difficulty with speaking
  4. dry mouth
  5. fever
  6. inability to move the eyes
  7. incomplete, sudden, or unusual body or facial movements
  8. increased sensitivity of the eyes to light
  9. poor coordination
  10. red or purple patches on the skin
  11. restlessness
  12. seizures
  13. shivering
  14. sweating
  15. talking, feeling, and acting with excitement and activity you cannot control
  16. trembling or shaking, or twitching

Incidence not known

  1. Back, leg, or stomach pains
  2. blindness
  3. blistering, peeling, or loosening of the skin
  4. blue-yellow color blindness
  5. blurred vision
  6. constipation
  7. cough or hoarseness
  8. dark urine
  9. decreased frequency or amount of urine
  10. decreased vision
  11. difficulty with swallowing
  12. electric shock sensations
  13. eye pain
  14. fainting
  15. general body swelling
  16. headache
  17. high fever
  18. hives or itching skin
  19. inability to move the arms and legs
  20. inability to sit still
  21. increased thirst
  22. incremental or ratchet-like movement of the muscle
  23. joint pain
  24. light-colored stools
  25. lockjaw
  26. loss of appetite
  27. loss of bladder control
  28. lower back or side pain
  29. muscle spasm, especially of the neck and back
  30. muscle tension or tightness
  31. need to keep moving
  32. painful or difficult urination
  33. painful or prolonged erection of the penis
  34. pale skin
  35. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  36. raised red swellings on the skin, the buttocks, legs, or ankles
  37. red, irritated eyes
  38. sensitivity to the sun
  39. skin redness or soreness
  40. slow heart rate
  41. sores, ulcers, or white spots on the lips or in the mouth
  42. spasms of the throat
  43. stiff muscles
  44. stomach pain
  45. sudden numbness and weakness in the arms and legs
  46. swelling of the breasts
  47. swelling of the face, fingers, or lower legs
  48. swollen or painful glands
  49. tightness in the chest
  50. unexpected or excess milk flow from the breasts
  51. unusual bleeding or bruising
  52. unusual tiredness or weakness
  53. vomiting
  54. weight gain
  55. yellowing of the eyes or skin

Incidence not known

  1. Decreased interest in sexual intercourse
  2. delayed or inability to have an orgasm
  3. inability to have or keep an erection
  4. loss in sexual ability, desire, drive, or performance

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. Acid or sour stomach
  2. belching
  3. decreased appetite
  4. heartburn
  5. pain or tenderness around the eyes and cheekbones
  6. passing gas
  7. problems with urinating
  8. runny or stuffy nose
  9. sleepiness or unusual drowsiness
  10. stomach discomfort or upset
  11. trouble sleeping

Less common

  1. Abnormal dreams
  2. change in sense of taste
  3. congestion
  4. discouragement, feeling sad, or empty
  5. drugged feeling
  6. fast or irregular breathing
  7. feeling of unreality
  8. headache, severe and throbbing
  9. increased appetite
  10. itching of the vagina or genital area
  11. itching, pain, redness, or swelling of the eye or eyelid
  12. lack of emotion
  13. loss of interest or pleasure
  14. lump in the throat
  15. menstrual changes
  16. pain during sexual intercourse
  17. problems with memory
  18. sense of detachment from self or body
  19. sneezing
  20. thick, white vaginal discharge with no odor or with a mild odor
  21. tightness in the throat
  22. tingling, burning, or prickling sensations
  23. trouble concentrating
  24. voice changes
  25. watering of the eyes
  26. weight loss
  27. yawn

Incidence not known

  1. Decrease in smell
  2. loss of sense of smell

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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