Opinions on Botox for Chronic Vestibular and Episodic Migraines?

I've been getting it for about and year and I can tell you the only thing sorta bad is that one of my eyes will droop a little when I'm tired even a little tired just relaxed face and it droops but not enough other would tell. That is really it I've not had any other effects as far as I can tell. And getting the shots hurts pretty bad but they are needles so it makes sense.😆