Methylated vs Standard B Vitamins — What's the Difference?

Not all B vitamins are created equal. If you have an MTHFR gene variant — or if you've been taking B vitamins for months without noticing a difference — understanding the distinction between methylated and standard forms could change everything.

The Problem With Standard B Vitamins

Most B-vitamin supplements and fortified foods use synthetic, inactive forms. These forms are cheaper to produce and have a longer shelf life, but your body must convert them into active forms before it can use them — and this conversion relies heavily on the MTHFR enzyme. If your MTHFR gene is impaired, which affects up to 40–60% of the population, this conversion is significantly reduced or blocked entirely.

Folic Acid vs Methylfolate

Folic acid is the synthetic form of vitamin B9 found in most supplements and fortified foods. To be used by your body, folic acid must go through a multi-step conversion process, with the final step catalysed by the MTHFR enzyme. If MTHFR is impaired, this final conversion is blocked or significantly slowed. Methylfolate (5-MTHF) is the active form your body uses directly — it requires no conversion and is immediately bioavailable. For people with MTHFR variants, methylfolate is the only form that reliably raises active folate levels.

Cyanocobalamin vs Methylcobalamin

Cyanocobalamin is the standard synthetic form of vitamin B12. Stable and inexpensive, it must be converted in your body to the active forms methylcobalamin and adenosylcobalamin — a process that requires functional methylation. Methylcobalamin is the active form of B12. It participates directly in the methylation cycle, supporting homocysteine conversion and nerve function. For people with MTHFR or impaired methylation, methylcobalamin is the preferred form.

Pyridoxine (B6) vs P-5-P

Pyridoxine is the standard form of vitamin B6. It must be converted to pyridoxal-5-phosphate (P-5-P) in the liver to become biologically active. P-5-P is the active coenzyme form of B6, participating directly in the transsulfuration pathway that converts homocysteine to cysteine — a critical backup route for homocysteine clearance.

Why NeuroThrive Uses Only Methylated Forms

Every B vitamin in the NeuroThrive™ range is in its active, methylated, or bioavailable form. Our MTHFR and Homocysteine Support formula uses methylfolate rather than folic acid, methylcobalamin rather than cyanocobalamin, and P-5-P rather than pyridoxine. This means your body can use what is in every capsule — no conversion required, no MTHFR dependency. For the 40–60% of people with MTHFR variants, this is the difference between a supplement that works and one that does not.

NeuroThrive™ products are food supplements and are not intended to diagnose, treat, or cure any medical condition. Individual results may vary. Please consult your GP before beginning any new supplement programme.