Side Effects

Drug information provided by: 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. Aggressive behavior
  2. agitation
  3. anxiety
  4. changes in vision, including blurred vision
  5. decreased sexual desire or performance
  6. difficulty concentrating
  7. difficulty speaking or swallowing
  8. inability to move the eyes
  9. loss of balance control
  10. mask-like face
  11. memory problems
  12. menstrual changes
  13. muscle spasms of the face, neck, and back
  14. problems with urination or increase in the amount of urine
  15. restlessness or need to keep moving (severe)
  16. shuffling walk
  17. skin rash or itching
  18. stiffness or weakness of the arms or legs
  19. tic-like or twitching movements
  20. trembling and shaking of the fingers and hands
  21. trouble sleeping
  22. twisting body movements

Less common

  1. Back pain
  2. chest pain
  3. speech or vision problems
  4. sudden weakness or numbness in the face, arms, or legs
  5. unusual secretion of milk


  1. Confusion
  2. dizziness
  3. drowsiness
  4. extreme thirst
  5. fast, shallow breathing
  6. fast, weak heartbeat
  7. headache
  8. increased thirst
  9. lip smacking or puckering
  10. loss of appetite
  11. muscle cramps
  12. pale, clammy skin
  13. poor coordination
  14. prolonged, painful, inappropriate erection of the penis
  15. puffing of the cheeks
  16. rapid or worm-like movements of the tongue
  17. shivering
  18. talking, feeling, and acting with excitement and activity that cannot be controlled
  19. uncontrolled chewing movements
  20. uncontrolled twisting movements of neck, trunk, arms, or legs
  21. unusual bleeding or bruising
  22. unusual facial expressions or body positions

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. Constipation
  2. cough
  3. diarrhea
  4. dry mouth
  5. headache
  6. heartburn
  7. increased dream activity
  8. increased length of sleep
  9. nausea
  10. sleepiness or unusual drowsiness
  11. sore throat
  12. stuffy or runny nose
  13. unusual tiredness or weakness
  14. weight gain

Less common

  1. Body aches or pain
  2. chills
  3. dandruff
  4. darkening of skin color
  5. dry skin
  6. ear congestion
  7. fever
  8. increase in body movements
  9. increased watering of the mouth
  10. joint pain
  11. loss of voice
  12. oily skin
  13. pain or tenderness around the eyes and cheekbones
  14. shortness of breath or troubled breathing
  15. sneezing
  16. stomach pain
  17. tightness of the chest or wheezing
  18. toothache
  19. vomiting
  20. weight loss

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.