Optimized Folate 1000 mcg by Life Extension — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
100% of ingredients have research evidence

A Label Compliance Grade

Product Label

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Label Data

1 Vegetarian Capsule(s) Serving Size

Vitamin Product Type

100% Evidence Coverage

Supplement Facts — Evidence Check

Folate

1000 mcg (250% DV)

✅ 2.5× RDA — within safe limits 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 1.0mg UL 1.0mg

Other Ingredients

Microcrystalline Cellulose Vegetable Cellulose Silica Vegetable Stearate

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (77% of products) Nutrient (60% of products) Approved Health (5% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Read the entire label and follow directions carefully prior to use. Directions: Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.

⚠️ Warnings & Precautions

Warnings: - Keep out of reach of children.

- Do not exceed recommended dose. - Do not purchase if outer seal is broken or damaged.

- When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

🧪 Formulation Notes

L-Methylfolate Metabolically active form of Folic Acid

Additional Information

Scan for product info

Q01439B

Store tightly closed in a cool, dry place.

To report a serious adverse event or obtain product information, contact 1-866-280-2852.

Product Details

UPC / SKU 7 37870 14391 8

DSLD Entry Date 2016-06-24

Product Type Vitamin

Form Capsule

Brand Life Extension

DSLD ID 60812

Data Updated 2026-04-11

Research Evidence

363 Research Sources

57 Avg Quality Score

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

View all evidence for Folate →