I tried supplementing with magnesium, and the severity (but not the frequency) of migraine attacks definitely decreased. Ultimately I gave up on Mg because of t

I tried supplementing with magnesium, and the severity (but not the frequency) of migraine attacks definitely decreased. Ultimately I gave up on Mg because of the gastrointestinal side effects. Butterburr extract has a couple of clinical trials as a preventative, but I didn't find that it did anything for me. Chlorpheniramine maleate (the antihistamine) worked as a preventative, reducing both severity and frequency of attacks, but I didn't like the side effects (it's also an SNRI) and discontinuation was ugly.