Side Effects

The most common side effects following injection include temporary eyelid droop and nausea. Localized pain, infection, inflammation, tenderness, swelling, redness, and/or bleeding/bruising may be associated with the injection. Patients with certain neuromuscular disorders, such as ALS, myasthenia gravis, or Lambert-Eaton syndrome may be at increased risk of serious side effects

Serious heart problems and serious allergic reactions have been reported rarely following the use of Botox®.

If you think you’re having an allergic reaction or other unusual symptoms, such as difficulty swallowing, speaking or breathing, call your doctor immediately.

Return to the Botox® Overview.

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