I have been having menstrual migraines for the last 15 years - up to 10 a month recently - and had been put on all sorts of drugs. I came across a site which mentioned lack of magnesium being a cause of migraine. When I asked to be put on a trial to see if it would work for me the doctors at hospital said they had never heard of such a thing so I started taking a supplement myself. Since taking the Magnesium I am down to 2-3 migraines a month. I am now taking the ACV mixture and look forward to seeing the effects of that.