Active methylated B forms (5-MTHF folate, methylcobalamin), not the cheaper cyano and folic-acid forms, NSF Certified for Sport.

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Called for in

• Methylation & Methylated B-Vitamins (MTHFR) · Gary Brecka
• Brain & Mood Protocol · Mark Hyman

Experts who call for it

Gary Brecka, Mark Hyman

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