Most insurance only allows a very small amount per month, so rebound headaches would be hard
to come by.
To get Botox for migraine (which has been even a better solution for me), you must have tried at least 3 or 4 different solutions for migraines, for years, have over a certain amount per month, and whatever other qualifications your insurance company has (certain # of migraines/month). Not easy to get approved. But now I can take 1/3 an Imitrix tablet and have the migraine vanish.