Riboflavin
Also called Plain riboflavin / B2
Plain riboflavin is the form used in the clinical trials for migraine prevention. It is converted into the active coenzymes FAD and FMN after absorption. For most people this is the correct and most cost-effective choice.
Best for
General use and migraine prevention
Absorption
High
Tolerability
Excellent at standard doses; high doses may cause bright urine
Typical timing
Morning or divided with meals; high doses with food
How to take Riboflavin
A typical dose of Vitamin B2 (Riboflavin): 1–1.5 mg RDA; 200–400 mg for migraine prevention. Best timing: Morning or divided with meals; high doses with food. The form you choose mainly affects absorption and how easily it sits with your stomach, not the overall dose.
Where to buy Riboflavin
Choose a third-party-tested brand; the label should name this form explicitly.
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