Longevity Supplements
Methylation governs DNA repair, epigenetic maintenance and homocysteine balance. B12 and folate status decline with age, and MTHFR variants limit activation. METHL delivers active forms your body uses directly to support already-healthy homocysteine levels and healthy aging.
Shop longevity supplements
3 productsMETHL delivers longevity supplements built on the mechanism that matters most: methylation. Active B12 as methylcobalamin and folate as 5-MTHF help maintain already-healthy homocysteine levels, support DNA methylation and epigenetic maintenance, and give your body the active forms it can use regardless of MTHFR status. Shop the collection below.
METHL'S Methylated Multivitamin
The METHL Methylated Multivitamin delivers essential vitamins and minerals in their most...
METHL Methylated B Complex Liquid...
Clean methylated B-complex in a USP vegetable glycerin base. No alcohol. No...
METHL'S Methylated Multivitamin and Liquid...
Fuel your body with our Methylated Multivitamin and fast-absorbing Liquid B12+ Complex....
Longevity supplements and the methylation connection.
Methylation and healthy aging. Methylation is a biochemical process in which a methyl group is transferred to DNA, proteins and other molecules, helping regulate gene expression, repair DNA and maintain cellular function. B vitamins, especially folate and B12, are essential cofactors. Research consistently links adequate B12 and folate status to maintained already-healthy homocysteine levels, and homocysteine is a well-studied marker associated with cardiovascular and cognitive wellness as we age.
Why activation matters. As we age, B12 absorption declines and the MTHFR enzyme operates more slowly in the 40-60% of people who carry a variant. That means synthetic folic acid and cyanocobalamin, the forms most supplements still use, can leave the methylation cycle short. METHL delivers folate as 5-MTHF (L-methylfolate) and B12 as methylcobalamin, active forms that require no conversion and work regardless of MTHFR status.
Methylfolate vs folic acid. Folic acid is a cheap, synthetic compound your body must convert; 5-MTHF is the active folate your cells use directly. For anyone supporting homocysteine balance, methylated folate is the more reliable choice. Read the full comparison in our guide to methylfolate vs folic acid.
The best longevity supplements to start with. Start with the Methylated Multivitamin for a complete daily foundation, 19 active vitamins and minerals plus fermented organic greens. Add the Liquid B-Complex Drops (methylcobalamin + TMG) for concentrated, fast-absorbing B-vitamin support. The Bundle combines both for full-spectrum methylation coverage at the best value. Not sure which fits your goals? Our guide to the best methylated multivitamin walks through what to look for. Every formula is made in the USA, third-party tested, vegan and non-GMO, with no synthetic fillers, backed by a 60-day money-back guarantee.
Healthy aging starts with the right form of B vitamins.
Methylation governs how your cells maintain DNA, regulate epigenetics and keep homocysteine in a healthy range. Most longevity supplements skip the mechanism entirely by using synthetic precursors. Here is what that gap looks like, and how METHL addresses it.
You sleep enough but still drag
B vitamins turn food into usable energy. When they arrive as inactive forms your cells can’t use, the tank never really fills.
METHL uses methylcobalamin B12 and active B vitamins your cells use on contact, no conversion step in between.
Words and focus slip mid-afternoon
Methylation helps build the neurotransmitters behind focus and mood. Weak conversion of folate and B12 can leave that process short.
METHL delivers 5-MTHF folate and methylcobalamin, the forms that feed methylation directly.
You convert folic acid poorly
Roughly a third to half of people carry an MTHFR variant that slows the switch from folic acid to usable folate, so standard multis underdeliver.
METHL is built for MTHFR: it skips the conversion entirely with pre-activated folate. See the MTHFR guide.
Your label lists “folic acid”
Unconverted folic acid can build up in the blood. It’s cheap to manufacture, which is why most multivitamins still use it.
METHL uses no synthetic folic acid, only natural 5-MTHF. See the difference.
You take pills that pass right through
Cheap binders, fillers and hard tablets can limit how much actually reaches your bloodstream.
METHL is a clean vegan formula with no synthetic fillers, plus a fast-absorbing liquid B-Complex option.
You can’t tell what’s really inside
Supplement quality varies widely, and most brands never show third-party proof.
Every METHL batch is third-party tested for purity and potency, vegan, non-GMO, made in the USA.
You feel flat, wired, or on edge
Your body uses methylation to build serotonin, dopamine and other mood chemicals. Weak B-vitamin status can leave that supply short.
METHL delivers 5-MTHF, methylcobalamin and P5P (B6), the active forms behind neurotransmitter production.
You want to support healthy homocysteine
Folate, B12 and B6 work together to keep homocysteine in a healthy range. In inactive forms, they can’t do that job as well.
METHL provides all three as active, methylated forms your body can put to work directly.
You catch whatever’s going around
Daily nutrient gaps can leave your defenses under-supported, especially through busy or high-stress stretches.
The Methylated Multivitamin adds an immunity blend: vitamin C from organic cherry and amla, plus zinc and selenium.
Your diet leaves real gaps, especially B12
Vegan and vegetarian diets are often low in B12 and a few other nutrients that are hard to get from plants alone.
METHL is fully vegan and plant-derived, with B12 as methylcobalamin in a form your body absorbs.
Your supplement shelf is out of control
Juggling five or six bottles is easy to start and hard to keep up. Most days something gets skipped.
METHL pulls your daily foundation, greens and immunity into one clean capsule, with the Bundle if you want B-Complex too.
Pills upset your stomach or are hard to swallow
Hard tablets, fillers and binders can sit heavily, so you stop taking them.
METHL skips synthetic fillers, and the fast-absorbing Liquid B-Complex is an easy no-pill option.
Find your METHL.
One question, we’ll match you to the right formula.

Methylated Multivitamin
Your everyday baseline, 19 active vitamins & minerals plus fermented organic greens, in one daily capsule. Built for MTHFR, absorbable for everyone.

Liquid B-Complex Drops
Fast-absorbing, methylated B-complex with methylcobalamin & TMG in a clean glycerin base, for steady energy, mood and MTHFR support. Just drops a day.

Multivitamin + B-Complex Bundle
The complete system, the daily multivitamin and the liquid B-complex together for full-spectrum methylation coverage, at the best price.
METHL vs a generic longevity supplement.
| What matters | Generic multi | METHL |
|---|---|---|
| Methylated, active B vitamins | ✕ | ✓ |
| Works with an MTHFR variant | ✕ | ✓ |
| Synthetic folic acid | Yes | Never |
| Fermented organic greens | ✕ | ✓ |
| Fillers & binders | Common | None |
| Glass bottle | ✕ | ✓ |
| Third-party tested | Rarely | ✓ |
“Methylation is central to how cells maintain themselves as we age. Delivering B12 and folate in active, bioavailable forms, methylcobalamin and 5-MTHF, supports healthy homocysteine metabolism and DNA methylation, which is exactly where longevity-focused nutrition should start.”
People who feel the difference.
“Absolutely the best vitamins I have ever taken. These vitamins are absolutely the best.”
“My doctor gave me a list of recommended vitamins for my neuropathy. Your product was recommended because it provides more of the vitamins than other products. Makes my daily routine easier.”
“Well tolerated!”
“I optimized everything and still felt off. Twenty years chasing performance, triathlete, marathon runner, martial artist, and I still couldn’t feel the difference. A genetic test explained why: an MTHFR variant meant my body couldn’t use standard vitamins. So I built the one that didn’t exist on the shelf.”
60-day money-back guarantee.
We’re confident you’ll feel the difference. If you’re not completely satisfied, return it within 60 days for a full refund. No questions asked.
Try for 60 days
Take METHL daily to experience the difference.
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Supports healthy aging
Methylation governs DNA repair and epigenetic maintenance. Active B12 and folate deliver the cofactors these processes depend on.
Homocysteine support
Folate, B12 and B6 work together to maintain already-healthy homocysteine levels, an important cardiovascular and cognitive wellness marker.
Clean & third-party tested
Made in the USA, third-party tested, vegan, no synthetic fillers. Real ingredients your body can use starting day one.
The longevity supplements FAQ.
What supplements support longevity? +
The supplements with the strongest mechanistic case for healthy aging are those that support methylation, because methylation governs DNA repair, epigenetic maintenance and homocysteine balance. Active B12 (methylcobalamin) and folate (5-MTHF) are central to that cycle. METHL delivers both in the active forms your body uses directly, no conversion required.
Do methylated vitamins help with aging? +
Methylation activity is central to how cells maintain themselves as we age. Adequate B12 and folate status, in active forms, supports the methylation cycle that governs DNA methylation and homocysteine metabolism. METHL uses methylcobalamin and 5-MTHF, the active forms, to support these processes. These statements have not been evaluated by the FDA; METHL is not intended to diagnose, treat, cure, or prevent any disease.
What is homocysteine and why does it matter for aging? +
Homocysteine is an amino acid your body produces and recycles through the methylation cycle. Folate, B12 and B6 are the key cofactors that keep homocysteine in a healthy range. When these nutrients arrive in inactive forms that your body struggles to convert, particularly with age or an MTHFR variant, the cycle can run less efficiently. METHL delivers all three as active, methylated forms to support already-healthy homocysteine levels.
Best longevity supplements to start with? +
Start with the Methylated Multivitamin for a complete daily foundation: 19 active vitamins and minerals, methylated B12 and folate, fermented organic greens and an immunity blend. Add the Liquid B-Complex Drops if you want concentrated, fast-absorbing methylated B vitamins for focused support. The Bundle combines both at the best value. Every formula is made in the USA, third-party tested, vegan and non-GMO.
Is it third-party tested? +
Yes. Every batch is independently tested for purity and potency. METHL is organic, plant-derived, vegan and non-GMO, with no fillers or binders, in a glass bottle.
How does the subscription work? +
Subscribe and save on every product. Your order ships on your schedule and you can pause, skip or cancel anytime.
What’s the difference between methylfolate and folic acid? +
Folic acid is a cheap synthetic form your body has to convert before it can use it. Methylfolate (5-MTHF) is the active folate your cells use directly. If you carry an MTHFR variant that conversion is limited, so methylfolate means no bottleneck and no unmetabolized folic acid left over.
Are there side effects to methylated B vitamins? +
Methylated B vitamins are well tolerated by most people. Because the active forms are potent, some people new to them notice a short adjustment period; taking them in the morning with food helps. If you have a specific health condition, check with your provider first.
How does METHL compare to other methylated multivitamins? +
METHL uses fully active forms across the board, 5-MTHF folate, methylcobalamin B12 and P5P B6, with fermented organic greens, no synthetic folic acid and no fillers, in a glass bottle, made in the USA and third-party tested. The quick test for any brand: read the label. If you see folic acid or cyanocobalamin, it isn’t fully methylated.
How do I take the Methylated Multivitamin? +
Take your daily serving once a day, ideally with a meal so the fat-soluble nutrients absorb well. Follow the serving size printed on your bottle.
How do I take the Liquid B-Complex? +
Shake well, then take 2 full droppers (2 mL) daily. You can take it straight, hold it under your tongue for a few seconds, or add it to water or juice.
Can I take the Multivitamin and Liquid B-Complex together? +
Yes. They’re designed to work together, which is exactly what the Bundle is. The multivitamin covers your daily foundation while the liquid adds concentrated, fast-absorbing active B vitamins.
What’s the difference between the capsule multivitamin and the liquid B-Complex? +
The Methylated Multivitamin is a complete daily foundation with vitamins, minerals, fermented organic greens and an immunity blend in a vegan capsule. The Liquid B-Complex is a focused dose of active B vitamins in a fast-absorbing liquid for energy, mood and methylation support.
Should I take methylated vitamins with food or on an empty stomach? +
Take the multivitamin capsule with food for the best absorption and the easiest-on-the-stomach experience. The Liquid B-Complex works with or without food.
What time of day should I take B vitamins? +
Morning is ideal. B vitamins support energy production, so most people prefer them earlier in the day rather than right before bed.
How long does one bottle of Liquid B-Complex last? +
About a month. Each 2 fl oz bottle holds roughly 30 daily servings at the 2 mL dose.
Can I take more than the recommended dose? +
Stick to the label. With B vitamins, more is not better, and there’s no benefit to doubling up. If you have questions about dosing for your situation, ask your healthcare provider.
What if I miss a day? +
Just take your next dose as usual. Methylated vitamins work best with steady daily use, so consistency matters more than any single day.
Can I take METHL every day, long term? +
Yes. METHL is built for daily use. You don’t need to cycle off it.
What form of folate does METHL use? +
5-MTHF (L-methylfolate), the active, body-ready form of folate, never synthetic folic acid. Read the full 5-MTHF guide.
What form of B12 is in METHL? +
Methylcobalamin, the active form of B12, rather than cheaper synthetic cyanocobalamin.
What form of B6 does METHL use? +
P5P (pyridoxal-5-phosphate), the active coenzyme form of vitamin B6 your body can use directly.
Does METHL contain synthetic folic acid? +
No. METHL never uses synthetic folic acid. You get natural 5-MTHF instead, which is especially important if you have an MTHFR variant. Here’s why that matters.
Does the Multivitamin contain greens? +
Yes. It includes a fermented organic greens blend alongside the methylated vitamins, minerals and an immunity blend with vitamin C from organic cherry and amla berry, plus zinc and selenium.
Who should take a methylated multivitamin? +
Anyone who wants reliably absorbable nutrients. Active forms benefit everyone, and they’re particularly useful if you have an MTHFR variant, eat a limited diet, or feel low on energy despite taking a standard multi.
Can both men and women take METHL? +
Yes. METHL is formulated for adults of any gender who want active, methylated nutrition.
Is METHL vegan? +
Yes. Both the Methylated Multivitamin and the Liquid B-Complex are vegan and plant-derived, including the capsule.
Is METHL gluten-free? +
Yes. METHL is gluten-free and non-GMO, with no synthetic fillers.
Is the Liquid B-Complex soy-free? +
Yes. The Liquid B-Complex is soy-free, sugar-free, alcohol-free and oil-free, with no synthetic preservatives.
Does METHL contain dairy or animal products? +
No. METHL is fully plant-derived and vegan, so there are no dairy or animal ingredients.
Is there sugar in the Liquid B-Complex? +
No added sugar. It’s naturally sweet on its own, with no sugar, alcohol or synthetic sweeteners.
Why is the liquid naturally sweet if it has no sugar? +
The pleasant taste comes from the plant-derived, self-preserving formula itself, not from added sugar or artificial sweeteners.
Where is METHL made? +
METHL is made in the USA and every batch is third-party tested for purity and potency.
How should I store my methylated vitamins? +
Keep them in a cool, dry place away from direct light and heat. Always reseal the cap, and follow any storage note on your label.
Do I need to shake the Liquid B-Complex? +
Yes. Shake well before each use so the active nutrients are evenly distributed in every dropper.
Will methylated B vitamins turn my urine bright yellow? +
It can, and that’s harmless. The bright color comes from riboflavin (B2) and simply means your body is passing what it doesn’t need that day.
Can I take METHL with my medications or other supplements? +
Usually yes, but always check with your healthcare provider first if you take prescription medication or other supplements, so they can confirm it fits your routine.
Can I take METHL if I’m pregnant or breastfeeding? +
Talk to your OB or healthcare provider before starting any supplement during pregnancy or breastfeeding. Many clinicians favor the active 5-MTHF form of folate, but your provider should guide what’s right for you.
How is METHL different from the multivitamin I have now? +
Most multivitamins rely on synthetic precursors like folic acid and cyanocobalamin that your body must convert. METHL delivers the active forms directly, in a clean vegan formula with greens and an immunity blend, third-party tested and made in the USA.
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Plus the occasional note on methylation, healthy aging and supporting homocysteine naturally.
