Great for migrane preevention.
I like these capsules because they are smaller than other brands.  Because I get many migranes, my doctor suggested that I use the vitamin B-2 for migrane prevention.  He said it would take 4-6 weeks before I noticed a difference.  I noticed a decrease in my migranes within 2 weeks, and within a month i was migrane free and continue to be migrane free as long as I take 400 mg of the vitamin B-2 a day.
Rating: 5 stars