Top 9 Best Folate Supplements (2026)
9 picks — ranked by our 50/50 methodology
- #1Editor's Choice — Proven & USP Verified
Nature Made Folic Acid 400 mcg (665 mcg DFE)
Nature Made8.5/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%8.5
- Dose vs Clinical Target25%8.5
- Third-Party Testing & Purity20%9.0
- Tolerability & Safety15%8.0
- Value10%8.0
The exact form proven to prevent neural-tube defects, at the exact prenatal dose, USP Verified, for about four cents a day. This is what the trials actually used.
- Form
- Folic acid (tablet)
- Dose
- 400 mcg folic acid (665 mcg DFE)
- Count
- 250 tablets
- Standardization
- NTD-proven form; hits 400 mcg prenatal target
- Testing
- USP Verified, Gluten Free
- Cost per dose
- ~$0.04 per tablet
Pros- Uses folic acid — the only form with randomized-trial evidence for NTD prevention
- USP Verified, the strongest independent quality seal in this list
- Lands precisely in the 400 mcg / 665 mcg DFE prenatal window
- Roughly four cents per day; 250-count bottle lasts eight months
Cons- Plain folic acid only — no added B12 or prenatal nutrients
- Large tablet count means a bigger single purchase than a monthly supply
Our take — This is the default folate for nearly every woman: the proven form, the proven dose, and the one product here carrying USP verification. Methylfolate fans will call it unglamorous, but glamour was never in the trials — folic acid was. Nothing else combines this much evidence with this little cost.
- #2Best Value
NOW Foods Folic Acid 800 mcg + B-12
NOW FoodsSAC Product Score™ — how it breaks down- Form & Evidence Base30%8.5
- Dose vs Clinical Target25%7.5
- Third-Party Testing & Purity20%7.5
- Tolerability & Safety15%8.0
- Value10%9.0
Folic acid at the upper end of the prenatal window, paired with B12 to support homocysteine metabolism, for about three cents a day — the cheapest proven option here.
- Form
- Folic acid + B-12 (tablet)
- Dose
- 800 mcg folic acid + 25 mcg B-12
- Count
- 250 tablets
- Standardization
- NTD-proven form; 800 mcg upper-target dose
- Testing
- Non-GMO, Kosher, GMP Quality Assured
- Cost per dose
- ~$0.03 per tablet
Pros- Folic acid — the evidence-backed form — at the 800 mcg upper prenatal target
- Added B-12 helps guard against the B12-masking risk of higher folic acid intake
- Lowest cost per serving in the entire list at around three cents
- 250-count bottle is an eight-month supply
Cons- GMP-assured but not independently USP/NSF verified like the top pick
- 800 mcg is fine but more than the 400 mcg minimum most women need
Our take — A near-perfect value play: the proven form, a sensible added B12, and the cheapest daily cost on the board. It sits behind Nature Made only because it lacks third-party verification and slightly overshoots the minimum dose. For budget-conscious buyers who want proven protection, this is the smart buy.
- #3Best Simple Folic Acid
Solgar Folic Acid 400 mcg
Solgar7.7/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%8.5
- Dose vs Clinical Target25%8.0
- Third-Party Testing & Purity20%6.5
- Tolerability & Safety15%8.0
- Value10%6.5
Straight folic acid at the 400 mcg NTD-prevention dose from a trusted legacy brand — the evidence-based form, no methylfolate upsell.
- Form
- Folic acid (tablet)
- Dose
- 400 mcg folic acid
- Count
- 250 tablets
- Standardization
- NTD-proven form at the 400 mcg minimum target
- Testing
- Non-GMO, Vegan, Kosher, Gluten Free
- Cost per dose
- ~$0.04 per tablet
Pros- Folic acid at the exact 400 mcg prenatal minimum — clean and on-target
- Vegan, Kosher, Gluten Free, and Non-GMO certified
- Reputable heritage brand with tight quality control
- Simple single-ingredient formula, no fillers of concern
Cons- No USP/NSF third-party verification seal
- Priced the same as the USP-verified Nature Made pick but without that seal
Our take — An excellent, no-nonsense folic acid at the textbook dose from a brand people trust. It trails the top two only on independent verification and value, not on the fundamentals. If you want the proven form and prefer Solgar's certifications, buy with confidence.
- #4Best for MTHFR
Solgar Folate 666 mcg DFE (Metafolin 400 mcg)
Solgar7.2/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%7.0
- Dose vs Clinical Target25%8.0
- Third-Party Testing & Purity20%6.5
- Tolerability & Safety15%8.5
- Value10%5.5
Bioidentical L-5-MTHF (Metafolin) at the 400 mcg target — no conversion step needed, a sensible pick if you specifically want the active form or have an MTHFR variant.
- Form
- L-methylfolate as Metafolin (tablet)
- Dose
- 400 mcg L-5-MTHF (666 mcg DFE)
- Count
- 100 tablets
- Standardization
- Patented Metafolin; at 400 mcg / 666 mcg DFE target
- Testing
- Non-GMO, Vegan, Gluten Free, Kosher
- Cost per dose
- ~$0.20 per tablet
Pros- Bioidentical active folate — bypasses the MTHFR conversion step entirely
- Hits the prenatal target cleanly at 400 mcg / 666 mcg DFE
- Well tolerated with vegan, kosher, and gluten-free certifications
- Uses patented Metafolin rather than a generic 5-MTHF
Cons- No NTD-prevention trial data exists for methylfolate — unlike folic acid
- Roughly five times the cost per serving of the proven folic acid picks
Our take — The best methylfolate here for anyone who genuinely wants the active form, with a bioidentical molecule at the right dose. It ranks below the folic acid tablets purely on evidence: methylfolate has never been shown in a trial to prevent NTDs. A reasonable choice for MTHFR-focused buyers who accept paying more for a form without outcome data.
- #5Best Practitioner-Grade Methylfolate
Pure Encapsulations Folate 400 (Metafolin L-5-MTHF)
Pure EncapsulationsSAC Product Score™ — how it breaks down- Form & Evidence Base30%6.8
- Dose vs Clinical Target25%7.0
- Third-Party Testing & Purity20%8.0
- Tolerability & Safety15%8.0
- Value10%4.0
The cleanest methylfolate on the list — hypoallergenic, single-ingredient, third-party tested — for buyers who want practitioner-grade purity with the active form.
- Form
- L-methylfolate as Metafolin (capsule)
- Dose
- 400 mcg L-5-MTHF
- Count
- 90 capsules
- Standardization
- Patented Metafolin at 400 mcg target
- Testing
- Third-party tested, Non-GMO, Gluten Free, Hypoallergenic
- Cost per dose
- ~$0.22 per capsule
Pros- Documented third-party testing plus hypoallergenic formulation
- Single-ingredient, no fillers — favored by practitioners
- Bioidentical Metafolin at the on-target 400 mcg dose
- Capsule format suits those sensitive to tablet excipients
Cons- Methylfolate has no NTD-prevention trials — folic acid remains the proven form
- Among the priciest per serving; roughly 5x the cost of folic acid picks
Our take — If you're set on methylfolate and prioritize purity, this is the cleanest option here — hypoallergenic, tested, and filler-free. It edges below the Solgar Metafolin on value and lands mid-pack overall because the form still lacks the outcome data that folic acid carries. A premium pick for a specific buyer, not the general default.
- #6Best Therapeutic Dose
Thorne 5-MTHF 1 mg (Methylfolate)
Thorne6.6/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%7.0
- Dose vs Clinical Target25%5.5
- Third-Party Testing & Purity20%8.0
- Tolerability & Safety15%7.0
- Value10%4.5
Therapeutic-strength 1 mg active folate from a trusted clinician brand — built for elevated homocysteine or clinician-directed high intake, not routine prenatal use.
- Form
- L-5-MTHF (capsule)
- Dose
- 1 mg (1,000 mcg) L-5-MTHF
- Count
- 60 capsules
- Standardization
- Active folate; 1 mg — above the 400-800 mcg target
- Testing
- Third-party tested, Gluten Free, Dairy/Soy Free
- Cost per dose
- ~$0.37 per capsule
Pros- Third-party tested by a respected clinician-facing brand
- Therapeutic 1 mg dose suits elevated homocysteine or directed high intake
- Bioidentical active folate, no conversion needed
- Free of gluten, dairy, and soy
Cons- 1 mg overshoots the 400-800 mcg prenatal target for most people
- No NTD-prevention data; superiority over folic acid is marketing for the general population
Our take — A high-quality, well-tested methylfolate — but the 1 mg dose is aimed at specific clinical situations, not routine prenatal folate. For the general goal it's more than most people need at a premium price, which is why it lands mid-list. Excellent if your clinician directed you to a therapeutic active-folate dose.
- #7Best Budget Methylfolate
Jarrow Formulas Methyl Folate 400 mcg
Jarrow Formulas6.2/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%6.3
- Dose vs Clinical Target25%6.5
- Third-Party Testing & Purity20%5.0
- Tolerability & Safety15%7.5
- Value10%5.5
The most affordable way into the active-folate category — 400 mcg (6S)-5-MTHF at the standard target for about fifteen cents a day.
- Form
- (6S)-5-MTHF (veggie capsule)
- Dose
- 400 mcg (6S)-5-MTHF
- Count
- 60 veggie capsules
- Standardization
- Active methylfolate at the 400 mcg target
- Testing
- Non-GMO, Vegan, Gluten Free
- Cost per dose
- ~$0.15 per capsule
Pros- Cheapest methylfolate on the list at the on-target 400 mcg dose
- Vegan veggie-capsule format, Non-GMO and gluten free
- Active (6S) isomer, the biologically usable form
- Good entry point for those who prefer active folate on a budget
Cons- No documented third-party testing beyond Non-GMO status
- Active form still lacks NTD-prevention trials — folic acid stays the proven prenatal choice
Our take — For buyers who want methylfolate without the premium-brand markup, this delivers the right isomer at the right dose cheaply. It ranks low mainly on verification — there's no third-party testing seal to back the label — and on the form's missing outcome data. Fine for budget active-folate shoppers, but a proven folic acid tablet costs even less.
- #8Best High-Dose Active Folate
NOW Foods Methyl Folate 1,000 mcg
NOW Foods5.9/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%6.5
- Dose vs Clinical Target25%4.8
- Third-Party Testing & Purity20%5.5
- Tolerability & Safety15%7.0
- Value10%5.8
High-dose 1 mg methylfolate at value pricing for those specifically directed to higher active-folate intakes — but well above what most people need.
- Form
- L-5-MTHF (tablet)
- Dose
- 1,000 mcg (1,667 mcg DFE) L-5-MTHF
- Count
- 90 tablets
- Standardization
- Active folate; 1,000 mcg exceeds the 400-800 mcg target
- Testing
- Non-GMO, Vegetarian, Kosher, GMP Quality Assured
- Cost per dose
- ~$0.16 per tablet
Pros- Value pricing for a 1 mg active-folate dose
- Vegetarian, Kosher, and Non-GMO with GMP assurance
- Bioidentical methylfolate for those who want the active form high
- 90-count bottle at a low per-serving cost for this dose
Cons- 1,000 mcg (1,667 mcg DFE) overshoots the prenatal target for most people
- No third-party verification and no NTD-outcome data for the form
Our take — A cheap way to get a high methylfolate dose, but 'high dose' isn't the goal for routine folate — the 400-800 mcg window is. It ranks near the bottom because it combines an overshoot dose, no NTD data, and only in-house GMP quality claims. Reserve it for people explicitly told to take 1 mg of active folate.
- #9Best Gummy (Convenience Pick)
MaryRuth's Organic Prenatal Gummies (Methylfolate 800 mcg DFE)
MaryRuth Organics5.5/10SAC Product Score™SAC Product Score™ — how it breaks down- Form & Evidence Base30%6.0
- Dose vs Clinical Target25%6.5
- Third-Party Testing & Purity20%4.5
- Tolerability & Safety15%6.0
- Value10%3.0
A USDA Organic prenatal gummy at the 800 mcg DFE target for people who simply can't or won't swallow pills — convenience is its whole case.
- Form
- Methylfolate gummy (prenatal multi)
- Dose
- 800 mcg DFE methylfolate (plus prenatal nutrients)
- Count
- 30 servings
- Standardization
- At 800 mcg DFE target; active-folate form
- Testing
- USDA Organic, Non-GMO, Vegan
- Cost per dose
- ~$0.93 per serving
Pros- Solves the pill-swallowing problem — adherence matters for daily folate
- Hits the 800 mcg DFE target and adds other prenatal nutrients
- USDA Organic, Non-GMO, and Vegan certified
- A full prenatal profile in one gummy, not just folate
Cons- Gummies add sugar and are the most expensive option here per serving
- Uses methylfolate (no NTD data) rather than the proven folic acid, at ~25x the cost of a folic acid tablet
Our take — The gummy exists for one reason — some people won't take tablets, and the folate they actually swallow beats the one they skip. But on pure efficacy and value it ranks last: sugar, the highest cost per day, no third-party verification, and the unproven form instead of folic acid. Buy it only if a chewable is the difference between taking folate and not.
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Why Getting Folate Right Matters — and Why the Form Debate Is Overblown
- 01
Folic acid prevents birth defects — this is settled science
Two landmark randomized trials (MRC 1991, Czeizel 1992) and a Cochrane meta-analysis proved that folic acid taken before and in early pregnancy cuts neural-tube-defect risk by roughly 70%. This is one of the most robust findings in all of prenatal nutrition, and it is built entirely on folic acid.
- 02
The neural tube closes before most women know they're pregnant
Neural-tube closure happens in the first ~28 days of pregnancy — often before a missed period. That's why guidelines urge every woman who could become pregnant to take 400 mcg folic acid daily, not just those actively trying. Starting after a positive test can be too late.
- 03
Methylfolate's superiority is largely marketing for the general population
L-methylfolate is bioidentical and slightly better absorbed, especially in MTHFR C677T carriers (Prinz-Langenohl 2009), but no trial has shown it prevents neural-tube defects (Obeid 2013). For most people it is a more expensive form without the outcome data that makes folate worth taking in the first place.
Synthesis of the MRC Vitamin Study (1991), Czeizel & Dudas (NEJM 1992), the Cochrane review (De-Regil 2015), Obeid et al. (2013) on methylfolate, and Prinz-Langenohl et al. (2009) on MTHFR bioavailability.
How We Ranked These 9 Folate Supplements
We scored every product with the SAC Efficacy method, which weighs what actually drives an outcome — the right form at the right dose, independently verified — far above price. For folate, that means a hard bias toward folic acid, the form with decades of randomized-trial evidence for neural-tube-defect prevention, and toward products that land in the 400-800 mcg DFE prenatal window. Methylfolate products are not penalized for being 'bad' — they are excellent, bioavailable molecules — but they lose points on the single axis that matters most for this goal: they have no NTD-prevention trial data. Price is a tie-breaker worth only 10%; it can never lift a product to the top. We also flag every honest caveat, from B12-masking at high doses to the sugar in gummies.
- Form & Evidence Base30%
Does the form have outcome data? Folic acid is the form proven in the MRC (1991) and Czeizel (1992) trials to prevent neural-tube defects, so it scores highest. L-methylfolate (Metafolin, Quatrefolic, 5-MTHF) is bioidentical and well absorbed but has zero NTD-prevention trials — bioavailability is not the same as proven efficacy.
- Dose vs Clinical Target25%
The prenatal window is 400-800 mcg DFE. Products that hit it cleanly score best; overshooting to 1,000+ mcg is not 'more protection' and edges toward the folic acid upper limit, while under-dosing fails the goal. Precision beats potency.
- Third-Party Testing & Purity20%
USP Verified, NSF, or documented third-party testing separates label claims from proof. Single-ingredient, hypoallergenic, filler-free formulations score higher than proprietary blends or products relying only on in-house GMP claims.
- Tolerability & Safety15%
Folate is generally very well tolerated. Here we reward clean formulations and suitability across genotypes, and we dock points for high folic-acid doses that can mask B12 deficiency and for gummy formats that add sugar.
- Value10%
Cost per daily serving — but strictly a tie-breaker. A proven folic acid tablet at three cents a day and a premium methylfolate at ninety cents are judged first on evidence; value only separates products already close on the axes that count.
The bottom line
- 01
Folic acid wins — because the trials say so
Nature Made Folic Acid 400 mcg takes the top spot for the same reason folic acid dominates the top three: it is the only folate form ever shown in randomized trials to prevent neural-tube defects. Add USP verification and a four-cent daily cost and the 'boring' choice is decisively the best one. For most women, the decision is this simple.
- 02
Methylfolate is a legitimate niche pick, not a proven upgrade
The Solgar Metafolin and Pure Encapsulations picks are genuinely good products — bioidentical, well tolerated, cleanly made — and reasonable for people with MTHFR variants who want the active form. But they rank below folic acid because 'better absorbed' is not 'proven to prevent birth defects.' Paying 5x more buys a marketing story and slightly faster blood levels, not better outcomes.
- 03
Dose discipline and format honesty separate the bottom of the list
The 1 mg methylfolate picks (Thorne, NOW) overshoot the 400-800 mcg target and suit specific clinical cases, not routine use, while the MaryRuth's gummy adds sugar and cost for the unproven form. They aren't bad products — they're mismatched to the goal. The best folate is the proven form, at the right dose, that you'll take every day.
Every claim ranked above traces back to one of these
Peer-reviewed studies, meta-analyses and clinical trials behind the picks. Click any citation to read the abstract on PubMed.
- [1]MRC Vitamin Study Research Group. Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. Lancet. 1991;338(8760):131-137.
Prevention of neural tube defects: results of the Medical Research Council Vitamin Study
Landmark randomized trial: 4 mg folic acid before and in early pregnancy cut the recurrence of neural-tube defects by 72%, establishing folic acid — not methylfolate — as the proven preventive form.
- [2]Czeizel AE, Dudas I. Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation. N Engl J Med. 1992;327(26):1832-1835.
Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation
Randomized trial showing periconceptional folic acid (800 mcg in a multivitamin) prevented the first occurrence of neural-tube defects, extending the evidence to women with no prior affected pregnancy.
- [3]De-Regil LM, Pena-Rosas JP, Fernandez-Gaxiola AC, Rayco-Solon P. Effects and safety of periconceptional oral folate supplementation for preventing birth defects. Cochrane Database Syst Rev. 2015;(12):CD007950.
Effects and safety of periconceptional oral folate supplementation for preventing birth defects
Cochrane meta-analysis confirming folic acid supplementation reduces neural-tube defects (RR ~0.31), the highest-tier evidence — all based on folic acid, not methylfolate.
- [4]Obeid R, Holzgreve W, Pietrzik K. Is 5-methyltetrahydrofolate an alternative to folic acid for the prevention of neural tube defects? J Perinat Med. 2013;41(5):469-483.
Is 5-methyltetrahydrofolate an alternative to folic acid for the prevention of neural tube defects?
Review directly addressing the hype: 5-MTHF (methylfolate) raises blood folate comparably but has no trial evidence for preventing neural-tube defects, so folic acid remains the evidence-based prenatal choice.
- [5]Prinz-Langenohl R, Bramswig S, Tobolski O, et al. [6S]-5-methyltetrahydrofolate increases plasma folate more effectively than folic acid in women with the homozygous or wild-type 677C>T polymorphism of MTHFR. Br J Clin Pharmacol. 2009;68(4):546-555.
[6S]-5-methyltetrahydrofolate increases plasma folate more effectively than folic acid in women with the homozygous or wild-type 677C>T polymorphism of MTHFR
Methylfolate raised plasma folate somewhat more than folic acid, especially in MTHFR 677TT women — the strongest case for the active form, but a surrogate marker, not an NTD outcome.
- [6]Crider KS, Bailey LB, Berry RJ. Folic acid food fortification-its history, effect, concerns, and future directions. Nutrients. 2011;3(3):370-384.
Folic acid food fortification-its history, effect, concerns, and future directions
Reviews how folic acid fortification produced population-wide drops in neural-tube defects and discusses safety, including the concern that high folic acid intake can mask vitamin B12 deficiency.