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. Difficulty with speaking
  2. drooling
  3. loss of balance control
  4. muscle trembling, jerking, or stiffness
  5. restlessness
  6. shuffling walk
  7. stiffness of the limbs
  8. twisting movements of the body
  9. uncontrolled movements, especially of the face, neck, and back

Less common

  1. Blurred vision
  2. dizziness
  3. headache
  4. inability to move the eyes
  5. increased blinking or spasms of the eyelid
  6. nervousness
  7. pounding in the ears
  8. slow or fast heartbeat
  9. sticking out the tongue
  10. trouble with breathing or swallowing
  11. unusual facial expressions


  1. High fever
  2. high or low blood pressure
  3. increased sweating
  4. lip smacking or puckering
  5. loss of bladder control
  6. muscle spasm or jerking of all extremities
  7. puffing of the cheeks
  8. rapid or worm-like movements of the tongue
  9. seizures
  10. severe muscle stiffness
  11. sudden loss of consciousness
  12. tiredness
  13. uncontrolled chewing movements
  14. uncontrolled movements of the arms and legs
  15. unusually pale skin

Incidence not known

  1. Hives or welts, itching, or skin rash
  2. itching, puffiness, or swelling of the eyelids or around the eyes, face, lips, or tongue
  3. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  4. redness of the skin
  5. tightness in the chest
  6. unusual tiredness or weakness

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

Symptoms of overdose

  1. Bigger, dilated, or enlarged pupils (black part of the eye)
  2. diarrhea
  3. fast, pounding, or irregular heartbeat or pulse
  4. increased sensitivity of the eyes to light
  5. lack or loss of strength
  6. nausea
  7. sleepiness or unusual drowsiness
  8. vomiting

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. Anxiety
  2. belching
  3. blurred vision
  4. difficulty having a bowel movement
  5. dry mouth
  6. fear
  7. fever
  8. heartburn
  9. hyperventilation
  10. inability to sit still
  11. indigestion
  12. irritability
  13. lightheadedness
  14. need to keep moving
  15. nervousness
  16. rash
  17. runny nose
  18. shaking
  19. sore throat
  20. stomach discomfort, upset, or pain
  21. trouble sleeping
  22. weight gain

Less common

  1. Accidental injury
  2. bloating or swelling of the face, arms, hands, lower legs, or feet
  3. body aches or pain
  4. congestion
  5. coughing
  6. difficulty with moving
  7. dryness or soreness of the throat
  8. hoarseness
  9. increased appetite
  10. increased salivation
  11. joint pain
  12. muscle aching or cramping
  13. muscle pains or stiffness
  14. rapid weight gain
  15. sneezing
  16. stuffy nose
  17. swollen joints
  18. tender, swollen glands in the neck
  19. tingling of the hands or feet
  20. tremor
  21. unusual weight gain or loss
  22. voice changes

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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