How BOTOX works

To treat adults with Cervical Dystonia, BOTOXm blocks the nerve signals that cause muscle spasms. This helps reduce muscle stiffness and tension.¹

  • As a result, muscle contractions may be reduced.¹

Treatment once every 3 months

There is no daily treatment required with BOTOX. Your specialist will administer BOTOX  treatments by injecting the medicine directly into the affected muscles. You can get treated again after the effect of the previous injection has worn off, but no sooner than every 3 months.¹

Possible side effects

The needles used for BOTOX® injections are very fine, but you may experience some pain, swelling, and other reactions at the injection sites.¹

Some side effects of BOTOX® include difficulty swallowing, upper respiratory infection, neck pain, headache, increased cough, flu-like symptoms, back pain, inflammation of the nasal passages, dizziness, increased muscle tone or stiffness, soreness at the injection site, general weakness/fatigue or lack of energy, oral dryness, speech disorder, fever, nausea, and drowsiness.

BOTOX® may cause serious side effects that can be life-threatening. Call your doctor or get medical help right away if you have any of these problems any time (hours to weeks) after injection of BOTOX®:

  • Problems swallowing, speaking, or breathing, due to weakening of associated muscles, can be severe and result in loss of life. You are at the highest risk if these problems are pre-existing before injection. Swallowing problems may last for several months
  • The spread of toxin effects. The effect of botulinum toxin may affect areas away from the injection site and cause serious symptoms including loss of strength and all-over muscle weakness, double vision, blurred vision, and drooping eyelids, hoarseness or change or loss of voice (dysphonia), trouble saying words clearly (dysarthria), loss of bladder control, trouble breathing, and trouble swallowing

This list does not cover all the possible serious side effects of BOTOX®. Please refer to the full Product Information, including Boxed Warning and Medication Guide, and talk with your doctor.


BOTOX® is a prescription medicine that is injected into muscles and used to treat the abnormal head position and neck pain that happens with cervical dystonia (CD) in people 16 years and older.

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