NOW

Methyl B-12 Review

Q: Is NOW Methyl B-12 a good supplement?

NOW Methyl B-12 received a product quality score of 96/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 2 active ingredients All 13 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, NOW, holds a brand trust score of 100/100.

Q: What are the ingredients in NOW Methyl B-12?

NOW Methyl B-12 contains 2 active ingredients: Folate[from Quatrefolic® (6S)-5-MTHF** Glucosamine Salt] [400 mcg (6S)-5-MTHF** (680 mcg DFE), Vitamin B-12 (as Methylcobalamin) (5,000 mcg) (5 mg). Notable high-dose ingredients include Vitamin B-12 at 208,333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Q: Is NOW a trustworthy supplement brand?

NOW receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 1759 products in their lineup. Note: NOW has 8 historical regulatory incidents on record, which are factored into the trust score.

What We Researched

2 active ingredients analyzed · 13 inactive ingredients decoded · 9 brand certifications checked · Page generated: Sep 2026

Product Score Excellent

100

Brand Score Excellent

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

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Folate[from Quatrefolic® (6S)-5-MTHF Glucosamine Salt] [400 mcg (6S)-5-MTHF	680 mcg DFE	170%
Vitamin B-12 (as Methylcobalamin) (5,000 mcg)	5 mg	208,333%

Bioavailability Excellent

Absorption Rating

Folate[from Quatrefolic® (6S)-5-MTHF** Glucosamine Salt] [400 mcg (6S)-5-MTHF** Good
Vitamin B-12 (as Methylcobalamin) (5,000 mcg) Good

Other Ingredients Excellent

Fillers & Additives

Sorbitol
Natural Flavors
Xylitol
Microcrystalline Cellulose
Cellulose
Magnesium Stearate
Monk Fruit
Citric Acid
Vegetable Stearic Acid
Hydroxypropyl Cellulose
Fructose
Stearic Acid
Stevia Leaf Extract

Efficacy Very Good

Dosage Analysis

Folate[from Quatrefolic® (6S)-5-MTHF** Glucosamine Salt] [400 mcg (6S)-5-MTHF** 680 mcg DFE Effective
Vitamin B-12 (as Methylcobalamin) (5,000 mcg) 5 mg High

Supplement Facts

Ingredient	Amount	% Daily Value
Folate[from Quatrefolic® (6S)-5-MTHF Glucosamine Salt] [400 mcg (6S)-5-MTHF	680 mcg DFE	170%
Vitamin B-12 (as Methylcobalamin) (5,000 mcg)	5 mg	208,333%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Sorbitol Safe

Provides sweetness and helps retain moisture in chewables.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Microcrystalline Cellulose Safe

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

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Monk Fruit Safe

It is used as a natural, low-calorie sweetener.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Vegetable Stearic Acid Generally_safe

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

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Fructose Generally_safe

It is used as a sweetener.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Stevia Leaf Extract Safe

Provides sweetness without calories or blood sugar impact.

Brand Trust Report

Certifications

9 certifications

Informed Sport Source available Primary evidence

Npa Gmp Source available Primary evidence

Consumerlab Source available Primary evidence

Labdoor Source available Primary evidence

Fda Gmp Inspections Source available Primary evidence

Non Gmo Project Source available Primary evidence

Usda Organic Source available Primary evidence

Vegan Certified Source available Primary evidence

Informed Choice Supporting evidence unavailable checked 2026-05-05

Transparency

5 claims

Coa Availability — Verified Evidence available Evidence

Third Party Testing Claim — Verified Evidence available Evidence

Testing Lab Disclosure — Claimed Brand claim; evidence unavailable

In House Testing — Verified Evidence available Evidence

Violation History

8 incidents

Lawsuit Mislabeled St. John's Wort supplement, containing significantly less of the active ingredient than advertised.None Source available Primary source

Lawsuit A data breach that compromised personal and health information of employees and dependents.2023 Source available Primary source

Prop 65 Lead2021-11-30 Source available Primary source

Recall NOW Real Food® Raw Macadamia Nuts2020-06-12 Source available Primary source

Recall NOW Real Food® Zesty Sprouting Mix2018-06-21 Source available Primary source

Lawsuit Misleadingly using slack-fill packaging for their Vitamin C supplements.2015 Source available Primary source

Fda Warning Adulterated Dietary Supplement due to pesticide (quintozene) contamination in American Ginseng.2007-10-12 Source available Primary source

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Frequently Asked Questions

Is NOW Methyl B-12 a good supplement?

NOW Methyl B-12 received a product quality score of 96/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 2 active ingredients All 13 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, NOW, holds a brand trust score of 100/100.

What are the ingredients in NOW Methyl B-12?

NOW Methyl B-12 contains 2 active ingredients: Folate[from Quatrefolic® (6S)-5-MTHF** Glucosamine Salt] [400 mcg (6S)-5-MTHF** (680 mcg DFE), Vitamin B-12 (as Methylcobalamin) (5,000 mcg) (5 mg). Notable high-dose ingredients include Vitamin B-12 at 208,333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW Methyl B-12 safe to take?

GoodSupp reviewed the inactive-ingredient data available for NOW Methyl B-12. All 13 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 NOW a trustworthy supplement brand?

NOW receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 1759 products in their lineup. Note: NOW has 8 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.