MTHFR Supplements
40-60% of people carry an MTHFR variant that blocks the conversion of folic acid. METHL skips the conversion entirely, delivering 5-MTHF folate and methylcobalamin your cells can use the moment you take them.
Shop MTHFR supplements
3 productsMETHL provides active methylated forms, 5-MTHF folate and methylcobalamin B12, that bypass the MTHFR enzyme bottleneck entirely. No conversion step, no folic acid accumulation. Designed for people with MTHFR C677T or A1298C variants and more bioavailable for everyone else.
METHL'S Methylated Multivitamin
The METHL Methylated Multivitamin delivers essential vitamins and minerals in their most absorbable, methylated...
METHL Methylated B Complex Liquid Drops...
Clean methylated B-complex in a USP vegetable glycerin base. No alcohol. No oil. No...
METHL'S Methylated Multivitamin and Liquid B...
Fuel your body with our Methylated Multivitamin and fast-absorbing Liquid B12+ Complex. This bundle...
MTHFR: why folic acid is not enough for 40-60% of people.
The MTHFR gene encodes an enzyme that converts folic acid into the active folate your body runs on. When MTHFR activity is reduced, folic acid sits unused and unmetabolized folate may accumulate, while your cells get less of what they actually need.
METHL uses 5-MTHF (L-methylfolate) and methylcobalamin, the pre-activated forms that enter the methylation cycle directly. No MTHFR enzyme required.
MTHFR C677T vs A1298C: what changes and what stays the same.
There are two primary MTHFR variants. Both reduce enzyme activity to different degrees. METHL formulas provide pre-activated folate that bypasses both.
The thermolabile variant
C677T produces an enzyme that is heat-sensitive and less stable. Homozygous carriers (TT genotype) may have MTHFR activity reduced by up to 70%. Heterozygous (CT) carriers see a milder reduction of around 35%.
The regulatory variant
A1298C affects a regulatory domain of the MTHFR enzyme. Homozygous carriers (CC genotype) may have activity reduced by 40%. Compound heterozygous (carrying one C677T and one A1298C) can see a larger combined reduction.
MTHFR supplements: what the gene variant means and what to look for.
What is the MTHFR gene? MTHFR (methylenetetrahydrofolate reductase) is a gene that encodes the enzyme responsible for converting dietary folate and synthetic folic acid into 5-MTHF (L-methylfolate), the active form your body uses in the methylation cycle. Methylation governs dozens of biochemical processes including DNA synthesis, neurotransmitter production, homocysteine regulation and cellular energy.
What the MTHFR gene variant does. When you carry a C677T or A1298C variant, your MTHFR enzyme activity is reduced. C677T homozygous carriers can see up to 70% lower activity. A1298C typically reduces activity by around 40%. Compound heterozygous carriers, one copy of each, often show intermediate reductions. This means standard folic acid supplements may deliver little usable folate regardless of dose.
Why 5-MTHF is the right choice for MTHFR. 5-MTHF (L-methylfolate) is already in its active form. It enters the methylation cycle without passing through the MTHFR enzyme step that the gene variant impairs. This is the core reason clinicians increasingly recommend 5-MTHF over folic acid for anyone with a known MTHFR variant, and why METHL never uses synthetic folic acid.
Methylcobalamin B12 for MTHFR. B12 works alongside folate in the methylation cycle. The active form is methylcobalamin, not the synthetic cyanocobalamin found in most multivitamins. Methylcobalamin pairs directly with 5-MTHF to support homocysteine remethylation and SAMe production. METHL uses methylcobalamin in both the capsule multivitamin and the liquid B-complex drops.
Do you need an MTHFR test before taking methylated vitamins? No. Because 5-MTHF and methylcobalamin are pre-activated forms, they are bioavailable and beneficial regardless of your genotype. People who have not been tested also benefit from skipping the conversion bottleneck. Testing can be useful for understanding your genetic picture but it is not a prerequisite for choosing a better form of folate.
Find the right MTHFR supplement for you.
Answer one question and we match you to the best formula for your situation.
Methylated Multivitamin
19 active vitamins and minerals, 5-MTHF folate, methylcobalamin B12, P5P B6, plus fermented organic greens in one daily capsule. Built specifically so MTHFR variants are never a bottleneck.
Liquid B-Complex Drops
Concentrated methylcobalamin, 5-MTHF and TMG (betaine) in a clean vegetable glycerin base. Fast-absorbing liquid format for energy, mood and MTHFR-specific methylation support. Just 2 droppers daily.
Multivitamin + B-Complex Bundle
The complete MTHFR stack. The capsule multivitamin covers your full daily foundation while the liquid B-complex adds concentrated, fast-absorbing active Bs. Everything your methylation cycle needs.
METHL vs generic supplements for MTHFR.
| What matters for MTHFR | Generic supplement | METHL |
|---|---|---|
| Folate as 5-MTHF (active form) | ✕ | ✓ |
| Methylcobalamin B12 (not cyanocobalamin) | ✕ | ✓ |
| Zero synthetic folic acid | Rarely | Always |
| Works without MTHFR conversion | ✕ | ✓ |
| P5P (active B6) | ✕ | ✓ |
| Third-party tested purity | Rarely | ✓ |
| No fillers or binders | Common | None |
“For anyone with an MTHFR variant, the form of folate in your supplement is not a minor detail, it determines whether you absorb it at all. 5-MTHF bypasses the conversion step that MTHFR polymorphisms impair. Paired with methylcobalamin, this is the most clinically sound approach to supporting methylation.”
People who finally feel it.
“I have the MTHFR C677T mutation and have tried many supplements. These are absolutely the best I have ever taken. I actually feel the difference.”
“My doctor specifically recommended a methylated B12 for my neuropathy. Your product was on the list because it provides the active forms rather than synthetic ones. Makes my daily routine so much easier.”
“Well tolerated and I can tell my body is absorbing it. I have compound heterozygous MTHFR and this is the first supplement that hasn’t upset my stomach at all.”
“A genetic test explained it. An MTHFR variant meant my body couldn’t use the vitamins I was taking. Twenty years of optimization, triathlete, marathon runner, martial artist, still feeling off. The answer was in the form of the nutrient, not the dose. So I built the supplement that skipped the conversion I couldn’t make.”
60-day money-back guarantee.
We are confident you will feel the difference. If you are not completely satisfied, return it within 60 days for a full refund. No questions asked.
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Take METHL daily to experience the difference in active forms.
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Why you can trust METHL
The MTHFR supplement FAQ.
What is a methylated multivitamin? +
It delivers folate and B12 in their active forms (5-MTHF and methylcobalamin), so your body doesn’t have to convert them first. Read our full guide to what a methylated multivitamin is.
What is the best supplement for MTHFR? +
Active folate (5-MTHF) and methylcobalamin in a complete active B-complex, while avoiding synthetic folic acid and cyanocobalamin, which a variant makes harder to convert.
What supplements should be avoided with MTHFR? +
Many people with a variant do better avoiding synthetic folic acid and cyanocobalamin in favor of the active forms. This is general education, not medical advice, so confirm your plan with a clinician.
Can MTHFR cause Hashimoto’s? +
Research has explored associations between MTHFR variants and some autoimmune conditions, but the evidence is mixed and a variant does not mean you’ll develop one. Supplements don’t treat or prevent disease, a clinician can interpret your situation.
What are the symptoms of MTHFR deficiency? +
MTHFR is a gene variant rather than a deficiency, but slow folate conversion is sometimes linked to fatigue, brain fog or elevated homocysteine. Only a clinician can evaluate this properly.
What vitamins should you not take with MTHFR? +
Some people with a variant prefer to avoid synthetic folic acid and cyanocobalamin and choose the active forms instead. Discuss your specific supplements with a clinician.
Is MTHFR linked to other health conditions? +
MTHFR variants have been studied in relation to homocysteine and various conditions, but findings are associational and often mixed. A variant is common and isn’t a diagnosis, a clinician can put it in context for you.
Do I need an MTHFR test to take these? +
No. Many people choose active forms without testing, since there’s no downside to using nutrients the body can already use. A test can inform the decision if you want more certainty.
Is it third-party tested? +
Yes. Every batch is third-party tested for purity and potency, so what’s on the label is what’s in the bottle. We believe verification should be the standard, not a marketing line.
Can I take it every day? +
Yes, it’s built as a daily foundation. The water-soluble vitamins aren’t stored, so any excess is simply excreted. Start at the labeled dose and take it with food for the best absorption.
Can I take it if I’m pregnant or breastfeeding? +
Nutrient needs change during pregnancy and breastfeeding, so this isn’t a substitute for a prenatal your provider recommends. Talk with your clinician about the right formula and dose for you before starting.
Can I take it with my medications or other supplements? +
Most people can, but some nutrients can interact with certain medications. If you take prescription medication or have a health condition, check with your clinician or pharmacist first.
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