How does it work migraines?

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by Drugs.com
Botox is a migraine prevention medicine injected into muscles in the head and neck every 12 weeks. It helps to block acetylcholine, a neurotransmitter that carries pain signals. In studies, Botox prevented 8 to 9 headache days a month, compared to 6 to 7 days for patients given a placebo.

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