Onabotulinumtoxina (Intramuscular Route)

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Side Effects

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
  • Difficulty with swallowing
Rare
  • Difficulty with breathing or speaking
  • Muscle weakness
More common—for blepharospasm
  • Dryness of the eyes
  • Inability to close the eyelids completely
Less common or rare—for blepharospasm
  • Decreased blinking
  • Irritation of the cornea (colored portion) of the eyes
  • Turning outward or inward of the edge 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
  • Blue or purplish bruise on the eyelids
  • Drooping of the upper eyelids
  • Irritation or watering of the eyes
  • Sensitivity of the eyes to light
More common—for cervical dystonia
  • Body aches or pain
  • Chills
  • Cough, fever, sneezing, or sore throat
  • Ear congestion
  • Headache
  • Loss of voice
  • Nasal congestion
  • Neck pain
  • Runny nose
  • Unusual tiredness or weakness
More common—for hyperhidrosis
  • Back, neck, or side pain
  • Body aches or pain
  • Chills
  • Congestion
  • Cough
  • Diarrhea
  • Dryness or soreness of the throat
  • Fear
  • Fever
  • General feeling of discomfort or illness
  • Headache
  • Heavy bleeding from the place where shot was given
  • Hoarseness
  • Itching skin
  • Joint pain
  • Loss of appetite
  • Muscle aches and pains
  • Nausea
  • Nervousness
  • Painful or difficult urination
  • Runny nose
  • Shivering
  • Sweating
  • Tender, swollen glands in the neck
  • Trouble sleeping
  • Trouble swallowing
  • Voice changes
  • Vomiting
More common—for strabismus
  • Drooping of the upper eyelid
  • Eye pointing upward or downward instead of straight ahead
Less common or rare—for blepharospasm
  • Skin rash
  • Swelling of the eyelid skin
Less common or rare—for strabismus
  • Difficulty finding the location of objects
  • Double vision

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.

Precautions

DR601801

Portions of this document last updated:

Nov. 1, 2009

Source: Drug Information provided by: Micromedex

Copyright © 2009 Thomson Healthcare Inc. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.


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