Swanson B-12 Methylcobalamin 5,000 mcg supplement bottle

B-12 Methylcobalamin 5,000 mcg Review

Name: Swanson B-12 Methylcobalamin 5,000 mcg Review
Item: B-12 Methylcobalamin 5,000 mcg
Author: GoodSupp

What We Researched

1 active ingredient analyzed · 10 inactive ingredients decoded · 6 brand certifications checked · Last updated: Aug 2026

Product Score Excellent

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
Vitamin B12 (as Methylcobalamin)	5000 mcg	208333%

Bioavailability Excellent

Absorption Rating

Vitamin B12 (as Methylcobalamin) Good

Other Ingredients Excellent

Fillers & Additives

Xylitol
Microcrystalline Cellulose
Croscarmellose Sodium
Natural Strawberry Flavor
Hydroxypropyl Methylcellulose
Calcium Palmitate
Silica
Beet juice color
Citric Acid
Stevia Leaf Extract

Efficacy Very Good

Dosage Analysis

Vitamin B12 (as Methylcobalamin) 5000 mcg High

Supplement Facts

Ingredient	Amount	% Daily Value
Vitamin B12 (as Methylcobalamin)	5000 mcg	208333%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

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.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Natural Strawberry Flavor Safe

It provides a strawberry flavor to the product.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Calcium Palmitate Generally_safe

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

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Beet juice color Unknown

Citric Acid Safe

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

Stevia Leaf Extract Safe

Provides sweetness without calories or blood sugar impact.

Brand Trust Report

Certifications

6 certifications

Nsf Gmp Verified Source

Fda Gmp Inspections Verified Source

Npa Gmp Verified Source

Usda Organic Verified Source

Vegan Certified Verified Source

NSF Certified Verified

Transparency

5 claims

Third Party Testing Claim — Verified Source

Coa Availability — Claimed Source

In House Testing — Verified Source

Testing Lab Disclosure — True

Contains Proprietary Blend — True

Violation History

5 incidents

Recall Vitamin B12 Methylcobalamin High Absorption2022-03-04Source

Prop 65 Lead2015-11-03Source

Recall Swanson Premium Brand Full Spectrum Cilantro (Coriander)2014-04-04Source

Recall Swanson Organic Celery Seed (Whole)2011-12-16Source

Fda Warning Products contained an unauthorized drug (lovastatin) and were marketed with claims to treat high cholesterol, rendering them unapproved new drugs.2007-08-08Source

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Frequently Asked Questions

Is Swanson B-12 Methylcobalamin 5,000 mcg a good supplement?

Swanson B-12 Methylcobalamin 5,000 mcg 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 10 inactive ingredients, 8 are rated safe and 0 are flagged for review. The manufacturer, Swanson, holds a brand trust score of 97/100 with 6 verified certifications including Nsf Gmp, Fda Gmp Inspections, Npa Gmp, Usda Organic.

What are the ingredients in Swanson B-12 Methylcobalamin 5,000 mcg?

Swanson B-12 Methylcobalamin 5,000 mcg contains 1 active ingredients: Vitamin B12 (as Methylcobalamin) (5000 mcg). Notable high-dose ingredients include Vitamin B12 at 208333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Swanson B-12 Methylcobalamin 5,000 mcg safe to take?

Swanson B-12 Methylcobalamin 5,000 mcg 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 Swanson a trustworthy supplement brand?

Swanson receives a brand trust score of 97/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Fargo, North Dakota, United States, the company offers 1329 products in their lineup. They hold 6 verified certifications including Nsf Gmp, Fda Gmp Inspections, Npa Gmp, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Swanson 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 — 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.