Solgar Folate, 666 mcg DFE supplement bottle
Solgar

Folate, 666 mcg DFE Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 4 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
78
Brand Score Fair

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 (400 mcg L-methylfolate)(as L-methylfolate as Metafolin®) 666 mcg DFE 167%
Bioavailability Excellent

Absorption Rating

  • Folate (400 mcg L-methylfolate)(as L-methylfolate as Metafolin®) Good
Other Ingredients Excellent

Fillers & Additives

  • Mannitol
  • Microcrystalline Cellulose
  • Vegetable Stearic Acid
  • Vegetable Cellulose
  • Silica
Efficacy Excellent

Dosage Analysis

  • Folate (400 mcg L-methylfolate)(as L-methylfolate as Metafolin®) 666 mcg DFE Effective

Supplement Facts

Ingredient Amount % Daily Value
Folate (400 mcg L-methylfolate)(as L-methylfolate as Metafolin®) 666 mcg DFE 167%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Mannitol Generally_safe

It is used as a sweetener, filler, and flow agent.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Vegetable Stearic Acid Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Vegetable Cellulose Safe

Forms a vegetarian capsule shell alternative to gelatin.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
Solgar

Founded 1947 · Leonia, New Jersey, United States · 295 products · solgar.com

Certifications

4 certifications
Halal Certified Verified Source
Kosher Certified Verified Source
Non-GMO Project Verified Verified
Gluten-Free Certified Verified

Transparency

4 claims
Third Party Testing Claim — Claimed
In House Testing — Verified Source
Testing Lab Disclosure — True
Contains Proprietary Blend — True
Related Supplements
Frequently Asked Questions
Is Solgar Folate, 666 mcg DFE a good supplement?

Solgar Folate, 666 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 Of the 5 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Solgar, holds a brand trust score of 78/100 with 4 verified certifications including Halal Certified, Kosher Certified, Non-GMO Project Verified, Gluten-Free Certified.

What are the ingredients in Solgar Folate, 666 mcg DFE?

Solgar Folate, 666 mcg DFE contains 1 active ingredients: Folate (400 mcg L-methylfolate)(as L-methylfolate as Metafolin®) (666 mcg DFE). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Solgar Folate, 666 mcg DFE safe to take?

Solgar Folate, 666 mcg DFE has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Solgar a trustworthy supplement brand?

Solgar receives a brand trust score of 78/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1947 and headquartered in Leonia, New Jersey, United States, the company offers 295 products in their lineup. They hold 4 verified certifications including Halal Certified, Kosher Certified, Non-GMO Project Verified, Gluten-Free Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.