Botox (onabotulinumtoxinA) is a brand-name injection prescribed to help prevent headaches in adults with chronic migraine. This article covers topics such as side effects, dosage, and how Botox works.

You've probably heard of Botox before, the medication that tightens skin and gets rid of wrinkles. But did you know it could help those who have migraine or get migraine headaches? Here's what you ...