Webmd Botox Side Effects 2024. Find 32 user ratings and reviews for botox cosmetic (onabotulinumtoxina) on webmd including side effects and drug interactions, medication effectiveness, ease of use and satisfaction Serious side effects of botox.

Headaches, bruising, pain at the site of injection, and, in fewer than 1% of cases, drooping eyelids or eyebrows that return to their natural position. The good news is that side effects are temporary and should wear off.