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:

More common

  1. Blurred vision or double vision
  2. continuous back-and-forth eye movements

Less common

  1. Actions that are out of control
  2. behavioral changes (especially in children)
  3. confusion, agitation, or hostility (especially in the elderly)
  4. diarrhea (severe)
  5. discouragement
  6. drooling
  7. fear
  8. feeling of unreality
  9. feeling sad or empty
  10. headache (continuing)
  11. increase in seizures
  12. irritability
  13. lack of appetite
  14. loss of balance control
  15. loss of interest or pleasure
  16. muscle trembling, jerking, or stiffness
  17. nausea (severe)
  18. other problems with muscle control or coordination
  19. sense of detachment from self or body
  20. shakiness and unsteady walk
  21. shuffling walk
  22. stiffness of the arm or leg
  23. sudden, wide mood swings
  24. talking, feeling, and acting with excitement
  25. thoughts or attempts of killing oneself
  26. tiredness
  27. trouble concentrating
  28. trouble sleeping
  29. twisting movements of the body
  30. uncontrolled movements, especially of the face, neck, and back
  31. unusual drowsiness
  32. vomiting (severe)


  1. Black, tarry stools
  2. blood in the urine or stools
  3. bone or joint pain
  4. chest pain or tightness
  5. cough
  6. darkening of the urine
  7. difficulty with speaking or slurred speech
  8. fainting
  9. frequent urination
  10. hoarseness
  11. irregular, pounding, or unusually slow heartbeat
  12. lower back or side pain
  13. mental depression with restlessness and nervousness or other mood or mental changes
  14. muscle or stomach cramps
  15. nosebleeds or other unusual bleeding or bruising
  16. numbness, tingling, pain, or weakness in the hands and feet
  17. pain, tenderness, swelling, or bluish color in the leg or foot
  18. painful or difficult urination
  19. pale stools
  20. pinpoint red spots on the skin
  21. rapid weight gain
  22. rigidity
  23. ringing, buzzing, or other unexplained sounds in the ears
  24. skin rash, hives, or itching
  25. sores, ulcers, or white spots on the lips or in the mouth
  26. swelling of the face, hands, feet, or lower legs
  27. swollen or painful glands
  28. sudden decrease in the amount of urine
  29. trembling
  30. trouble breathing
  31. uncontrolled body movements
  32. unusual tiredness or weakness
  33. visual hallucinations (seeing things that are not there)
  34. yellow eyes or skin

Incidence not known

  1. Blistering, peeling, or loosening of the skin
  2. chills
  3. decreased urine output
  4. dilated neck veins
  5. extreme tiredness or weakness
  6. general feeling of discomfort or illness
  7. irregular breathing
  8. irregular heartbeat
  9. joint or muscle pain
  10. red skin lesions, often with a purple center
  11. red, irritated eyes
  12. sore throat
  13. swelling of the face, fingers, feet, or lower legs
  14. thickening of bronchial secretions
  15. unusual bleeding or bruising
  16. weight gain

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. Dizziness (mild)
  2. drowsiness (mild)
  3. lightheadedness
  4. nausea (mild)
  5. vomiting (mild)

Incidence not known

  1. Accidental injury
  2. aching joints or muscles
  3. back pain
  4. belching
  5. constipation
  6. dryness of the mouth
  7. headache
  8. heartburn
  9. increased sensitivity of the skin to sunlight (skin rash, itching, redness or other discoloration of the skin, or severe sunburn)
  10. increased sweating
  11. indigestion
  12. irritation or soreness of the tongue or mouth
  13. lack or loss of strength
  14. loss of hair
  15. loss of memory
  16. problems with memory
  17. sexual problems in males
  18. sleepiness
  19. stomach pain, upset, or discomfort

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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