Jarrow Formulas Methyl Folate 400 mcg Review
#7 of 9 · Best Budget Methylfolate✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Consider it. Budget active folate at the right dose. The least expensive way into 400 mcg methylfolate.
$9 approx~$0.15 / capsule
Why It Scores 6.5 — And The Label Line Behind Each Number
Form & Evidence Base
30% of scoreMethylfolate has no NTD-prevention trial data, and a budget product does nothing to change that evidence gap. (6S)-5-MTHF is the active, conversion-free form; bioavailability is comparable to premium methylfolate.
- Form
- (6S)-5-MTHF veggie capsule
Dose vs Clinical Target
25% of score400 mcg matches the standard folate target, an appropriate dose for the category.
- Dose
- 400 mcg methylfolate
Third-Party Testing & Purity
20% of scoreNon-GMO, vegan and gluten-free, but no independent USP/NSF or explicit third-party potency verification.
- Testing / Certification
- Non-GMO, Vegan, Gluten Free
Tolerability & Safety
15% of scoreA vegan, non-GMO, gluten-free capsule with a simple single-ingredient design.
Value
10% of scoreAround $9 for 60 capsules — cheap for methylfolate, though still far above folic acid per dose.
- Count
- 60 veggie capsules
- Cost per dose
- ~$0.15 per capsule
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
(6S)-5-MTHF is the biologically active folate form
(6S)-5-methyltetrahydrofolate is the naturally occurring active isomer used directly in one-carbon metabolism without conversion (PMID 24494987).
Budget methylfolate works as well as premium brands
The active form is the same, but without third-party testing there is less independent assurance of potency and purity than premium competitors provide.
What Our Test Actually Found
Correct isomer, correct dose, thinner testing
Jarrow delivers the right active form at the right dose, but the absence of explicit third-party verification is the main gap versus pricier methylfolate.
Cheap doesn't fix the evidence problem
Lowering the price of methylfolate makes it more accessible, but it is still a form without NTD-prevention trials — so it does not become the evidence-based default just by being affordable.
Full analysis: all pros & cons (7), buy if / skip if
- Lowest-cost route into active methylfolate
- Correct (6S)-5-MTHF isomer at the standard 400 mcg dose
- Vegan, non-GMO, gluten-free capsule
- Reasonable everyday value within its category
- Simple single-ingredient design
- No independent third-party testing seal
- Active form still lacks NTD-prevention evidence
- Lowest-cost route into active methylfolate
- Correct (6S)-5-MTHF isomer at the standard 400 mcg dose
- Vegan, non-GMO, gluten-free capsule
- No independent third-party testing seal
- Active form still lacks NTD-prevention evidence
The least expensive way into 400 mcg methylfolate. Fine if you specifically want the active form on a budget, but weaker testing transparency than premium methylfolate and no NTD-prevention evidence.
Jarrow's methyl folate is the value entry into the 5-MTHF category: 400 mcg of (6S)-5-MTHF in a vegan capsule at roughly $9. If you have already decided you want active methylfolate and want to spend the least, this is a reasonable pick at the correct dose. It ranks below the premium methylfolate options on testing transparency — Jarrow carries non-GMO/vegan claims but not the third-party seals of Pure Encapsulations or Thorne — and below all folic acid picks because, once again, the active form has no NTD-prevention trials. Cheap methylfolate is still methylfolate: fine for the right buyer, not the evidence-based default.
Fine budget methylfolate, still not the default
If you want active methylfolate and want to spend the least, Jarrow is a sensible pick at the right dose. But the thinner testing transparency and the same evidence gap as all methylfolate keep it in the lower half. For proven prenatal protection at even lower cost, a folic acid tablet remains the smarter buy.
If This Doesn’t Fit — Try These
02NOW Folic Acid 800 + B-12
A near-perfect value play: the proven form, a sensible added B12, and the cheapest daily cost on the board.
05Pure Encapsulations 400
If you're set on methylfolate and prioritize purity, this is the cleanest option here — hypoallergenic, tested, and filler-free.
Quick Answers
Is cheap methylfolate lower quality?
The active form is the same, but Jarrow lacks the explicit third-party testing that premium brands provide, so there's less independent assurance of potency and purity.
Should I pick this over folic acid to save money?
No — folic acid options here are cheaper per dose and carry the NTD-prevention evidence. Choose Jarrow only if you specifically want the active methylfolate form on a budget.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Scaglione F, Panzavolta G. Folate, folic acid and 5-methyltetrahydrofolate are not the same thing. Xenobiotica. 2014;44(5):480-8. PMID 24494987 — Folate, folic acid and 5-methyltetrahydrofolate are not the same thing. Describes (6S)-5-MTHF as the biologically active folate isomer with distinct metabolism from folic acid.
- [2] De-Regil LM, Peña-Rosas JP, Fernández-Gaxiola AC, Rayco-Solon P. Effects and safety of periconceptional oral folate supplementation for preventing birth defects. Cochrane Database Syst Rev. 2015;(12):CD007950. PMID 26662928 — Effects and safety of periconceptional oral folate supplementation for preventing birth defects. Folate supplementation protects against neural-tube defects; trials used folic acid.
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