Cofactor

Folate (B9) and Vitamin B2 (Riboflavin)

Riboflavin is required to convert folate into its active 5-MTHF form.

By the Vital Matrix Editorial TeamReviewed by the Vital Matrix Research TeamLast updated June 25, 2026

Designed to work as a pair

One is required for the other to do its job, so they belong together in a stack.

How to take them

Folate (B9)

Dose
400–1,000 mcg DFE per day; up to 1,000 mcg L-Methylfolate for MTHFR
Timing
With or without food; morning is common to support daytime methylation

Vitamin B2 (Riboflavin)

Dose
1–1.5 mg RDA; 200–400 mg for migraine prevention
Timing
Morning or divided with meals; high doses with food

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Frequently asked

Can you take Folate (B9) and Vitamin B2 (Riboflavin) together?

Yes, they are commonly taken together. Riboflavin is required to convert folate into its active 5-MTHF form.

What's the best time to take Folate (B9) and Vitamin B2 (Riboflavin)?

Around the same time works well. Folate (B9): With or without food; morning is common to support daytime methylation. Vitamin B2 (Riboflavin): Morning or divided with meals; high doses with food.

How do Folate (B9) and Vitamin B2 (Riboflavin) interact?

Cofactor: Required for the other to do its job. Riboflavin is required to convert folate into its active 5-MTHF form.

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