Magnesium comes in a variety of forms which all have different rates of absorption and is mostly symptomatic in nature for treatment to help open up blood vessels and reduce platelet stickiness.
Goldenseal I see mostly as antimicrobial herb with gut regulating activity. Not my first choice for migraines. So you haven't exhausted your non-pharmaceutical options by any means.
Food is really important just wanted to re-emphasis that.
Thank you, what are the best supplements for migraine sufferers?
I'd be willing to explore them since my physician now recommends just Botox.
Exploring your food sensitivities is more important.