Methylfolate is the active form of folate (vitamin B9), sold ready for your cells to use without the conversion that folic acid needs. It has become the darling of the MTHFR conversation, and there are some genuinely good products. But the honest starting point matters: most people do not need methylfolate specifically. Plain folic acid or the folate in a decent multivitamin works fine and costs less. Methylfolate earns its place if you prefer the active form, know you carry MTHFR variants, or simply feel better on it. If that is you, this guide ranks the best methylfolate supplements on form, dose, testing, and price, and it is candid about the two things the category quietly gets wrong: over-dosing, and pretending one branded salt beats another.
The short story: Thorne 5-MTHF is the best overall pick, from one of the most testing-serious brands in the business. From there, Solgar Metafolin is the best value in the most-studied form, and Jarrow is the one at the sensible everyday dose. For a deeper explainer on the science, see our companion guide to folate vs folic acid and what MTHFR really means.
The short version
- Best overall: Thorne 5-MTHF, active Quatrefolic folate from a rigor-obsessed brand.
- Do you even need it? Most people are fine on folic acid or a multivitamin; methylfolate is for active-form preference, MTHFR variants, or feeling better on it.
- Dose sanity: 400 mcg covers the adult requirement; 1,000 mcg is a therapeutic dose, not a mandatory one. Watch mcg versus mcg DFE.
- No sealed options: no methylfolate here carries a USP or NSF product seal, so brand reputation is your quality proxy.
- Feel wired on it? Folinic acid (Seeking Health) is the methyl-free alternative.
How we ranked them
Methylfolate products are more alike than the marketing admits: nearly all use a quality branded form of the same active molecule. So we weighed the things that actually differ:
- Brand quality and testing. Here is an honest surprise: none of these carries a USP or NSF product seal, which is rare for a supplement category. So brand reputation and testing rigor become the proxy, and Thorne, Pure Encapsulations, and Solgar lead on that. See how to read a label.
- Form and salt. L-5-MTHF as Quatrefolic or Metafolin, both fine, plus one folinic acid option for people sensitive to methyls.
- Sensible dose. 400 mcg covers the requirement; 1,000 mcg is therapeutic. We reward products that make a reasonable dose easy, not the biggest number.
- Vegan and clean formula. All seven are vegan; we favored short, hypoallergenic ingredient lists.
- Value. Cost per serving, since folate is usually a long-term daily habit.
Scores are our editorial assessment on a five-point scale, not customer ratings, and the spread is deliberately tight because these are all capable products. Per-serving prices are approximate and change often.
The 7 best methylfolate supplements
Tap any product to jump straight to its full review.
Thorne 5-MTHF 1 mg
Best for: Active folate from a testing-serious brand
The one to beat. Thorne delivers 1,000 mcg of L-5-MTHF as Quatrefolic in a clean vegan capsule, from a brand widely regarded as one of the most quality-obsessed in the industry, with extensive in-house testing and NSF- and TGA-registered facilities. If the thing that reassures you is rigorous manufacturing, this is the pick. The honest flag: Thorne is famous for NSF Certified for Sport, but that seal covers its Sport line, not this standalone 5-MTHF SKU, so treat this as excellent brand and facility testing rather than a per-product seal. At around 36 cents a serving it is mid-priced, not cheap.
- Elite brand-testing reputation
- Quatrefolic active folate, vegan
- Clean, short ingredient list
- NSF- and TGA-registered facilities
- NSF for Sport does not cover this SKU
- 1,000 mcg is more than most need
- Mid-tier price per serving
Solgar Folate as Metafolin
Best for: Metafolin, the most-researched active folate, at a fair price
The most-studied form, well priced. Solgar uses Metafolin, the Merck-developed calcium salt of 5-MTHF that has the longest research track record of the branded active folates, at 1,000 mcg in a vegan, kosher tablet, and its 120-count bottle is the longest supply here at a low cost per serving. If you want the form with the most science behind it without paying a practitioner premium, this is it. The honest note is the same as most of this category: there is no independent product seal, so you are trusting a long-established mainstream brand.
- Metafolin, the most-researched 5-MTHF
- Low cost per serving, 120 count
- Vegan and kosher
- Established, widely available brand
- No independent product seal
- 1,000 mcg is above everyday need
- Tablet, not a capsule
Jarrow Methyl Folate 400 mcg
Best for: A sensible daily dose at the lowest price
The sane-dose value pick. Where most of this category jumps straight to 1,000 mcg, Jarrow offers 400 mcg of Quatrefolic 5-MTHF, which is about 680 mcg DFE and sits right at the adult daily requirement, in a vegan capsule at the lowest bottle price here. For everyday folate support rather than a therapeutic dose, this is the most physiologically reasonable choice, and it is the one we would hand most people. The honest notes are minor: no independent seal, and the "Extra Strength" name is a bit much for what is really a standard daily dose.
- Sensible 400 mcg, right at the RDA
- Quatrefolic active folate, vegan
- Cheapest bottle in the lineup
- Non-GMO, gluten-free
- No independent product seal
- "Extra Strength" label oversells it
- Lower dose if a clinician wants more
Pure Encapsulations Folate 1000
Best for: A hypoallergenic, practitioner-grade methylfolate
The cleanest label. Pure Encapsulations gives you 1,000 mcg of Metafolin 5-MTHF in a genuinely hypoallergenic vegan capsule, from the practitioner brand best known for short, allergen-free ingredient lists and rigorous internal testing. If you react to fillers or just want the minimalist option, this is the one. The honest catch is the price: it is the most expensive per serving here, and like the rest it has no on-label USP or NSF seal, so you are paying for the brand's clean-label reputation rather than an independent certification.
- Hypoallergenic, very clean formula
- Metafolin active folate, vegan
- Respected practitioner brand
- Priciest per serving in the lineup
- No independent product seal
- 1,000 mcg is above everyday need
Life Extension Optimized Folate
Best for: The lowest cost per serving on an active folate
The value leader. Life Extension's Optimized Folate delivers 1,700 mcg DFE (1,000 mcg of L-methylfolate) across 100 vegetarian tablets at the lowest cost per serving in this roundup, around 11 cents. If you have decided you want a full 1 mg active-folate dose and price is the priority, nothing here beats it. The honest notes: it uses a generic L-5-MTHF rather than a branded Quatrefolic or Metafolin (functionally the same active molecule), and it carries no independent seal, so this is value over pedigree.
- Cheapest per serving here
- Full 1 mg active-folate dose
- Vegetarian, non-GMO
- 100-tablet supply
- Generic L-5-MTHF, not a branded salt
- No independent product seal
- More dose than most people need
NOW Foods Methyl Folate 1,000 mcg
Best for: A widely available, affordable Quatrefolic option
The everywhere-available budget pick. NOW Foods offers 1,000 mcg of Quatrefolic 5-MTHF in a vegan, kosher, and halal tablet from one of the most widely stocked value brands, and NOW is unusually transparent about its in-house testing lab for a mainstream label. If you want a reputable active folate you can find almost anywhere without overpaying, it delivers. The honest notes: it is a mass-market brand rather than a practitioner one, it has no independent product seal, and 1,000 mcg is again more than most people need.
- Affordable Quatrefolic 5-MTHF
- Vegan, kosher, and halal
- Widely available, in-house lab
- Mass-market, not practitioner brand
- No independent product seal
- 1,000 mcg above everyday need
Seeking Health Folinic Acid
Best for: People who feel wired on methylfolate
The methyl-free option, included on purpose. To be clear, this is folinic acid (calcium folinate), not methylfolate, so it is a slightly different active folate that the body converts into 5-MTHF as needed. It earns a spot because a real minority of people feel jittery or irritable on methylfolate, sometimes called overmethylation, and folinic acid is the standard gentler swap, here as a pleasant vegan lozenge. If methylfolate has not agreed with you, this is the pick. The honest notes: it is the priciest per serving, it is not what most "best methylfolate" shoppers are after, and folinic acid is also used to manage the drug methotrexate, which must always be doctor-directed.
- Methyl-free active folate
- Good for methyl-sensitive people
- Pleasant vegan lozenge
- Folinic acid, not methylfolate
- Most expensive per serving
- No independent product seal
The full lineup, side by side
These are all capable active folates, so weigh dose sensibility, brand, and price more than the specific salt.
| Product | Form | Dose | Salt | Vegan | ~ Price / serving |
|---|---|---|---|---|---|
| Thorne 5-MTHF | 5-MTHF | 1,000 mcg | Quatrefolic | Yes | $0.36 |
| Solgar Metafolin | 5-MTHF | 1,000 mcg | Metafolin | Yes | $0.21 |
| Jarrow Methyl Folate | 5-MTHF | 400 mcg | Quatrefolic | Yes | $0.18 |
| Pure Encapsulations | 5-MTHF | 1,000 mcg | Metafolin | Yes | $0.37 |
| Life Extension | 5-MTHF | 1,000 mcg | L-5-MTHF | Yes | $0.11 |
| NOW Methyl Folate | 5-MTHF | 1,000 mcg | Quatrefolic | Yes | $0.20 |
| Seeking Health | Folinic acid | 800 mcg | Ca folinate | Yes | $0.43 |
The adult requirement is 400 mcg DFE; 400 mcg of methylfolate more than covers it (it shows on labels as about 680 mcg DFE). Doses of 1,000 mcg are therapeutic-level, not mandatory. No product here carries a USP or NSF seal; prices are approximate and change often.
How to choose
First, decide if you actually need methylfolate
Most people do not need the active form specifically. Plain folic acid and the folate in a good multivitamin work fine, cost less, and (for folic acid) carry the strongest pregnancy evidence. Methylfolate makes sense if you prefer the active form, know you carry MTHFR variants, have elevated homocysteine, or simply feel better on it. Our folate vs folic acid and MTHFR guide walks through the science and the hype in depth.
Do not chase a specific branded salt
Quatrefolic and Metafolin are both high-quality, patented forms of the same active molecule, L-5-MTHF. Metafolin has the longest research history; Quatrefolic is marketed as more stable. In practice they perform equivalently, so pick a reputable brand at a sensible dose rather than hunting for one salt.
Match the dose to your goal, and read the unit
400 mcg of methylfolate covers the adult requirement and shows on labels as about 680 mcg DFE (dietary folate equivalents). Many products deliver 1,000 mcg (about 1,700 mcg DFE), which is a therapeutic-level dose that is fine but more than most people need. The upper limit is 1,000 mcg per day of folic acid, and there is no benefit to mega-dosing, so ignore the biggest number and check the mcg-versus-mcg-DFE unit.
Know that seals are scarce here
Unusually for supplements, none of these methylfolates carries a USP or NSF product seal. So brand reputation and testing rigor stand in for it: Thorne, Pure Encapsulations, and Solgar are the most established, and NOW is transparent about its in-house lab. This is a case where a trusted brand matters more than usual.
If methylfolate makes you feel off, switch forms
A minority of people feel jittery, wired, or irritable on methylfolate. If that is you, folinic acid (calcium folinate) is the standard methyl-free alternative your body still converts to active folate. It is the reason we included the Seeking Health lozenge despite it not being methylfolate.
For pregnancy, use a prenatal
If folate matters because you are pregnant or trying, a complete prenatal that already contains active folate is usually the better vehicle than a standalone folate pill, and folic acid still has the strongest trial evidence for reducing neural tube defect risk. Take the dose your provider recommends.
Frequently asked questions
Is methylfolate better than folic acid?
For building folate status, not meaningfully. Methylfolate is the active form your cells use directly, so it skips the conversion folic acid needs, and it is a fine choice. But folic acid is cheaper, more stable, and the form proven in the landmark pregnancy trials and food fortification, and most people convert it perfectly well. Methylfolate is worth choosing if you prefer the active form, carry MTHFR variants, or simply feel better on it, but it is not a required upgrade for everyone.
Do I need methylfolate if I have an MTHFR variant?
Usually not specifically. MTHFR variants are common and only modestly reduce how efficiently you activate folate, and most carriers still use normal folic acid doses fine. Professional genetics guidance even recommends against routine MTHFR testing. Methylfolate is a reasonable way to bypass the conversion step if you like the idea, but the more useful number is homocysteine, which reflects whether your folate status is actually a problem. If it is normal, the form rarely matters.
Quatrefolic or Metafolin: which methylfolate is better?
Both are high-quality, patented forms of the same active molecule, L-5-MTHF. Metafolin is the Merck-developed calcium salt with the longest track record and the most research behind it; Quatrefolic is a newer glucosamine salt marketed as more stable and soluble. In practice they perform equivalently for raising folate status, so this is not a difference worth paying up or hunting for. Pick a reputable brand and a sensible dose rather than chasing a specific salt.
How much methylfolate should I take?
For general use, 400 mcg of methylfolate covers the adult recommended intake (it shows on labels as about 680 mcg DFE, or dietary folate equivalents). Many products deliver 1,000 mcg (about 1,700 mcg DFE), which is a therapeutic-level dose that is fine but more than most people need. The tolerable upper limit is 1,000 mcg per day of folic acid, and there is no reason to mega-dose. Watch the mcg-versus-mcg-DFE unit so you know how much active folate you are actually getting.
What is folinic acid, and who should choose it over methylfolate?
Folinic acid (calcium folinate) is another active, reduced folate that the body converts into methylfolate and the other folate forms as needed. It is methyl-free, so it is the usual pick for the minority of people who feel jittery, irritable, or wired on methylfolate, sometimes called overmethylation. It is also the form used medically to rescue patients from the drug methotrexate, though that timing must be directed by a doctor. For general folate support, methylfolate and folinic acid are both fine.
Is methylfolate safe to take during pregnancy?
Methylfolate is a valid source of folate in pregnancy, but the smarter vehicle is usually a complete prenatal that already includes active folate plus the other nutrients you need, rather than a standalone folate pill. Folic acid still has the strongest trial evidence for reducing neural tube defect risk, and methylfolate is an accepted alternative. The priority is getting enough folate, started before conception, at the dose your prenatal provider recommends. Always follow your OB or midwife.
The bottom line
Methylfolate is a good product in search of the right buyer. If you have decided you want the active form, Thorne 5-MTHF is the best overall on the strength of an elite testing brand, Solgar Metafolin is the value pick in the most-studied form, and Jarrow is the one at the sensible everyday dose that most people should actually take. Pure Encapsulations is the cleanest label, Life Extension the cheapest per serving, NOW the widely available budget brand, and Seeking Health folinic acid the methyl-free swap if methylfolate does not agree with you. Above all, remember the honest headline: most people do not need methylfolate specifically, plain folic acid is proven and cheaper, and no product in this category carries an independent seal, so a trusted brand at a reasonable dose is the whole game.