Natural Factors B12, Methylcobalamin, 5,000 mcg, 60 Chewable Tablets supplement bottle
Natural Factors

B12, Methylcobalamin, 5,000 mcg, 60 Chewable Tablets

What We Researched
1 active ingredient analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
93
Product Score Excellent
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (methylcobalamin) 5000 mcg 208,333%
Bioavailability Excellent

Absorption Rating

  • Vitamin B12 (methylcobalamin) Good
Other Ingredients Excellent

Fillers & Additives

  • Lactose
  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Magnesium Stearate (Vegetable Grade)
Efficacy Very Good

Dosage Analysis

  • Vitamin B12 (methylcobalamin) 5000 mcg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (methylcobalamin) 5000 mcg 208,333%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Lactose Generally_safe

It is used as a filler or binder.

Microcrystalline Cellulose Safe

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

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Magnesium Stearate (Vegetable Grade) Generally_safe

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

Price Comparison

iHerb $15.37
Best Price
Target $16.99

Price History

Tracked across major retailers. Updated periodically.

$17$16$15$14$13 Mar 12 $15.37
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 390 products · naturalfactors.com

Certifications

5 certifications
B Corp Certified Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-10-31Source
Recall Hi Potency B Complex, RevitalX, Super Multi® IRON FREE2024-07-19Source
Lawsuit Products labeled as containing glucosamine sulfate did not contain the ingredient.2021Source
Prop 65 Lead2016-01-13Source
Recall Natural Factors L-Arginine 500mg2006-04-05Source
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Frequently Asked Questions
Is Natural Factors B12, Methylcobalamin a good supplement?

Natural Factors B12, Methylcobalamin, 5,000 mcg, 60 Chewable Tablets received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors B12, Methylcobalamin?

Natural Factors B12, Methylcobalamin contains 1 active ingredients: Vitamin B12 (methylcobalamin) (5000 mcg). Notable high-dose ingredients include Vitamin B12 at 208,333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors B12, Methylcobalamin safe to take?

Natural Factors B12, Methylcobalamin, 5,000 mcg, 60 Chewable Tablets 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 Natural Factors a trustworthy supplement brand?

Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 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. 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.