Botox Safety Information

Botox® (onabotulinumtoxinA, previously known as botulinum toxin type A) is a prescription medicine used to improve the appearance of wrinkles between the eyebrows and to treat severe sweating and certain muscle spasm conditions. It is important to review information on Botox safety before using the medication.
It is important to know that Botox can cause allergic reactions, difficulty swallowing, and heart problems. These complications are more likely to occur if you have a neuromuscular disease or heart disease, so tell your healthcare provider if you have these conditions before receiving Botox injections. You may not be able to safely use Botox if you are allergic to any components of the medication or have an infection near where the injections will be given.
A number of other side effects may also occur with Botox. In studies of Botox for cosmetic use (to improve the appearance of lines between the eyebrows), common side effects included droopy eyelids, nausea, muscle weakness, and facial pain. When the drug was used for treating severe sweating or muscle spasms during clinical studies, many people reported difficulty swallowing, neck pain, and vertical misalignment of the eye.
(Click Botox Side Effects and Botox Warnings and Precautions for more information, including a more complete list of possible side effects and warnings on who should not use this medication.)
Last reviewed by: Kristi Monson, PharmD
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