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Methyl Folate 5,000 mcg

product on market Capsule NOW Safety: 60/100
60/100

Review before taking

  • Folate: 8333mg is 8333.0× the Tolerable Upper Intake Level (1.0mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Methyl folate is used to support folate levels in the body, with strong evidence for its role in cellular function. However, the high dosage in this product may lead to safety concerns. Due to limited evidence coverage, the overall profile lacks comprehensive clinical validation.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Folate: 8333mg is 8333.0× the Tolerable Upper Intake Level (1.0mg)

AI-generated · Qwen 3.6 · grounded in 2 sources · methodology

This product received a low safety score because the amount of folate is significantly higher than the recommended Tolerable Upper Intake Level. This means the dosage far exceeds the maximum daily amount generally considered safe for adults.

Label

Product Label

Label for Methyl Folate 5,000 mcg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Veg Capsule(s)
Serving Size
Vitamin
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

8333 mcg DFE (2083% DV)
Exceeds UL by 8333.0× (UL: 1.0 mg) 226 studies (A:10, B:105)

Other Ingredients

Microcrystalline Cellulose Hypromellose Stearic Acid
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: Take 1 capsule daily with a meal.

Warnings & Precautions

Caution: For adults only. The elderly and individuals with conditions that may impair vitamin B-12 absorption should frequently check vitamin B-12 status when taking this product as high-dose folic acid may mask vitamin B-12 deficiency.

Consult physician if pregnant/nursing, taking medication (especially phenobarbital, phenytoin, primidone, and methotrexate), or have a medical condition (especially any condition involving nutrient malabsorption).

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Formulation Notes

Methylfolate is the biologically active, naturally occurring form of folate that is used for fundamental body functions like normal cell division and the synthesis of neurotransmitters and DNA. Unlike regular folic acid, methylfolate has been shown to penetrate the blood-brain barrier, where it helps to support neurological health. Quatrefolic is a patented form of methylfolate that has demonstrated bioavailability superior to that of folic acid from dietary sources.

Co-Enzyme B vitamin Metabolically active folic acid Quatrefolic

Non-GMO

Vegetarian/Vegan

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Additional Information

Superior bioavailability

Non-GMO

Vitamins Family owned since 1968.

GMP Quality Assured

Metadata

Product Details

UPC / SKU7 33739 00502 1
DSLD Entry Date2019-07-24
Product TypeVitamin
FormCapsule
BrandNOW
DSLD ID204897
Data Updated2026-04-11
Research

Research Evidence

363
Research Sources
57
Avg Quality
187
Meta Analysis
56
Systematic Review
54
Rct
29
Guideline
26
Clinical Trial
6
Cochrane Review
2
Regulatory Source
1
Other
1
Openfda Safety
A Homocysteine-lowering interventions for preventing cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Community-based intervention packages for reducing maternal and neonatal morbidity and mortality and improving neonatal outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Folate Intake and Risk of Pancreatic Cancer: A Systematic Review and Updated Meta-Analysis of Epidemiological Studies
Meta Analysis Digestive diseases and sciences 2021 PubMed DOI
A The Association Between the Risk of Hypertensive Disorders of Pregnancy and Folic Acid: A Systematic Review and Meta-Analysis
Meta Analysis Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques 2021 PubMed DOI
A A Comparative Study Evaluating the Effectiveness of Folate-Based B Vitamin Intervention on Cognitive Function of Older Adults under Mandatory Folic Acid Fortification Policy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Meta Analysis Nutrients 2024 PubMed DOI
A Associations between serum Homocysteine, vitamin B9, and vitamin B12 levels and the formation of intracranial Aneurysms: A systematic review and meta-analysis
Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2025 PubMed DOI
A Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies
Meta Analysis Critical reviews in food science and nutrition 2019 PubMed DOI
A Beneficial effects of folic acid supplementation on lipid markers in adults: A GRADE-assessed systematic review and dose-response meta-analysis of data from 21,787 participants in 34 randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2022 PubMed DOI
A Folic acid supplementation and blood pressure: a GRADE-assessed systematic review and dose-response meta-analysis of 41,633 participants
Meta Analysis Critical reviews in food science and nutrition 2023 PubMed DOI
A Digital tracking, provider decision support systems, and targeted client communication via mobile devices to improve primary health care
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.