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Zahler Methylfolate 1,000 mcg DFE supplement bottle
Zahler

Methylfolate 1,000 mcg DFE Review

What We Researched
1 active ingredient analyzed · 2 inactive ingredients decoded · 3 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
81
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Folate(as L-5-Methyltetrahydrofolate Calcium)(BioFolate®) 1,000 mcg DFE 250%
Bioavailability Excellent

Absorption Rating

  • Folate(as L-5-Methyltetrahydrofolate Calcium)(BioFolate®) Good
Other Ingredients Excellent

Fillers & Additives

  • Organic Rice Hull Concentrate
  • Hypromellose (Capsule)
Efficacy Excellent

Dosage Analysis

  • Folate(as L-5-Methyltetrahydrofolate Calcium)(BioFolate®) 1,000 mcg DFE Effective

Supplement Facts

Ingredient Amount % Daily Value
Folate(as L-5-Methyltetrahydrofolate Calcium)(BioFolate®) 1,000 mcg DFE 250%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Organic Rice Hull Concentrate Safe

Natural filler and flow agent from rice hulls.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Brand Trust Report
Zahler

Founded 2005 · Brooklyn, NY, USA · 174 products · zahlers.com/

Certifications

3 certifications
Fda Gmp Inspections Source available Primary evidence
Kosher Certified Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency

5 claims
Third Party Testing Claim — Claimed Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — True Brand claim; evidence unavailable
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

4 incidents
Prop 65 Lead2023-08-28 Source available Primary source
Lawsuit Trademark Infringement2022 Source available Primary source
Prop 65 Lead2021-12-09 Source available Primary source
Fda Warning A retailer was cited for making drug claims about a Zahler product.2017-04-17 Source available Primary source
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Frequently Asked Questions
Is Zahler Methylfolate 1,000 mcg DFE a good supplement?

Zahler Methylfolate 1,000 mcg DFE received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 120 servings per container. All 2 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Zahler, holds a brand trust score of 81/100.

What are the ingredients in Zahler Methylfolate 1,000 mcg DFE?

Zahler Methylfolate 1,000 mcg DFE contains 1 active ingredients: Folate(as L-5-Methyltetrahydrofolate Calcium)(BioFolate®) (1,000 mcg DFE). Notable high-dose ingredients include Folate at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Zahler Methylfolate 1,000 mcg DFE safe to take?

GoodSupp reviewed the inactive-ingredient data available for Zahler Methylfolate 1,000 mcg DFE. All 2 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Zahler a trustworthy supplement brand?

Zahler receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2005 and headquartered in Brooklyn, NY, USA, the company offers 174 products in their lineup. Note: Zahler has 4 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.