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

More common

  1. Difficulty with swallowing


  1. Difficulty with breathing or speaking
  2. muscle weakness

More common—for blepharospasm

  1. Dryness of the eyes
  2. inability to close the eyelids completely

More common—for urinary incontinence caused by an overactive bladder

  1. Bladder pain
  2. bloody or cloudy urine
  3. difficult, burning, or painful urination
  4. frequent urge to urinate
  5. lower back or side pain

Less common or rare—for blepharospasm

  1. Decreased blinking
  2. irritation of the cornea (colored portion) of the eyes
  3. turning outward or inward of the edge of the eyelids

Less common—for lateral canthal lines

  1. Swelling of the eyelids

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—for blepharospasm

  1. Blue or purplish bruise on the eyelids
  2. drooping of the upper eyelids
  3. irritation or watering of the eyes
  4. sensitivity of the eyes to light

More common—for cervical dystonia

  1. Body aches or pain
  2. chills
  3. cough, fever, sneezing, or sore throat
  4. ear congestion
  5. headache
  6. loss of voice
  7. nasal congestion
  8. neck pain
  9. runny nose
  10. unusual tiredness or weakness

More common—for chronic migraine

  1. Neck pain

More common—for hyperhidrosis

  1. Body aches or pain
  2. chills
  3. congestion
  4. cough
  5. diarrhea
  6. dryness or soreness of the throat
  7. fear
  8. fever
  9. general feeling of discomfort or illness
  10. headache
  11. heavy bleeding from the place where shot was given
  12. itching skin
  13. joint pain
  14. loss of appetite
  15. nausea
  16. nervousness
  17. painful or difficult urination
  18. runny nose
  19. shivering
  20. sweating
  21. tender, swollen glands in the neck
  22. trouble sleeping
  23. trouble swallowing
  24. voice changes
  25. vomiting

More common—for strabismus

  1. Drooping of the upper eyelid
  2. eye pointing upward or downward instead of straight ahead

More common—for upper limb spasticity

  1. Pain in the arms

Less common or rare—for blepharospasm

  1. Skin rash
  2. swelling of the eyelid skin

Less common or rare—for chronic migraine

  1. Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
  2. blurred vision
  3. body aches or pain
  4. cough producing mucus
  5. difficulty breathing
  6. dizziness
  7. drooping of the upper eyelid
  8. headache
  9. muscle aches and pains
  10. nervousness
  11. pounding in the ears
  12. slow or fast heartbeat
  13. tightness in the chest

Less common or rare—for strabismus

  1. Difficulty finding the location of objects
  2. double vision

Less common—for lower limb spasticity

  1. Back pain
  2. body aches or pain
  3. chills
  4. cough
  5. difficulty in breathing
  6. ear congestion
  7. fever
  8. headache
  9. loss of voice
  10. nasal congestion
  11. sneezing
  12. sore throat
  13. unusual tiredness or weakness

Less common—for upper limb spasticity

  1. Cough producing mucus
  2. difficulty breathing
  3. muscle weakness
  4. nausea
  5. tightness in the chest
  6. weakness

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.