Mayo Clinic Q and A:  Botox for migraines

DEAR MAYO CLINIC: I have suffered with migraines on and off for about five years. Recently, the oral therapy I've used seems to be less effective. While I know newer medications are available, a friend suggested I try Botox injections. She swears it brought her chronic headaches under control. How safe are these injections, and how does Botox work? What is the treatment schedule, and would I also need to be on other headache medication, too?…
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