10 Best B12 Vitamins 3rd Party Tested of 2025

Tested and Reviewed: Top 10 B12 Vitamins 3rd Party Tested deals with expert ratings from 8.1 to a perfect 10

May 2026 Edition

Editor's Choice

9.7

Nutricost

Nutricost Vitamin B12 (Methylcobalamin) 2000mcg, 240 Capsules - Vegetarian Caps, Non-GMO, Gluten Free B12 Supplement

Editor's bottom line:

“This b12 vitamins 3rd party tested is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

240 Capsules of Vitamin B12 In Each Bottle
2,000mcg of Vitamin B12 (Methylcobalamin) in each (Vegetarian) Capsule
High Quality B12, Vegetarian Friendly, Non-GMO, Gluten Free
Tested by Independent (3rd Party), ISO-Accredited Laboratories
Manufactured in an NSF Certified, GMP Compliant, FDA Registered Facility

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Picked by 397 people today

9.5

Vitamatic

Vitamatic Vitamin B12 1000 mcg Fast Dissolve – 365 Tablets – Natural Berry Flavor – Supports Energy Metabolism & Nervous System Health

Main Highlights

Fast Dissolve B12 - Natural Berry Flavor
Supports Production of Energy, Red Blood Cells - Healthy Nervous System - Promotes Cardiovascular Health
Non-GMO formula - Gluten Free
Free of Starch, Sodium, Soy, Yeast, Corn, Wheat, Egg, Artificial Color, Flavor & Preservatives.
Made in a the USA GMP Compliant, FDA Registered Facility

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9.5

NatureWise

NatureWise Vitamin B12 1000 mcg - Dietary Supplement for Supporting Energy Metabolism, Mental Clarity, Nervous System Health - Easy-to-Swallow, Soy & Gluten-Free, Non-GMO - 60 Softgels[60-Day Supply]

Main Highlights

ENERGY METABOLISM SUPPORT: Every easy-to-swallow softgel delivers 1000 mcg of Vitamin B12 to support the production of cellular energy and help convert food into energy.*
CARDIOVASCULAR HEALTH: Vitamin B12 is important for cardiovascular health, function, and balance in homocysteine levels.*
BRAIN & NERVE HEALTH SUPPORT: Vitamin B12 may support your cognitive function due to its important role in the nervous system. B12 contributes to the body's production of neurotransmitters, which affect clarity, mood, and memory.*
SUPERIOR FORMULATION WITH HALAL GELATIN: NatureWise Vitamin B12 softgels have no artificial colors, synthetic dyes, flavors, or GMOs, and they are made with halal gelatin. They are free of gluten, wheat, soy, dairy, eggs, peanuts, tree nuts, fish, or shellfish.
NSF-CONTENTS CERTIFIED, 3rd PARTY TESTED, QUALITY ASSURED: NatureWise Vitamin B12 1000 mcg softgels are 3rd party tested and NSF-Contents Certified for purity and efficacy and manufactured in the USA with high-quality ingredients from around the world in a cGMP-certified facility.

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9.2

THORNE

THORNE - Vitamin B12 - as Methylcobalamin - Supports Heart & Nerve Health, Blood Cell Function, Restful Sleep & Methylation* - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules

Main Highlights

Active B12: Each capsule provides 1 mg vitamin B12 as methylcobalamin, which is more efficiently used by the body compared to other forms of vitamin B12, like cyanocobalamin
Heart & Brain Health: Supports a normal level of homocysteine in the body to benefit healthy cardiac function, blood cell formation, and optimal nerve function*
Sleep Support: Helps maintain normal circadian rhythms to support restful sleep and supports healthy methylation processes in the body*
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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9.0

Horbäach

Horbäach B12 Vitamin 5000 mcg | 120 Fast Dissolve Tablets | Sublingual Methylcobalamin | Natural Berry Flavor | Vegan, Non-GMO & Gluten Free Supplement

Main Highlights

SUBLINGUAL B-12: Enjoy the benefits of this Essential Vitamin in delicious Natural Berry Flavor!
POTENT FORMULA: Fast dissolve tablets feature 5,000 mcg of Vitamin B-12 as Methylcobalamin
EXPERTLY CRAFTED: Our vegan formula is backed by our commitment to purity and potency
HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
NATURALLY FREE OF: Gluten, Yeast, Milk, Lactose, Soy, Artificial Flavor, Preservatives, & Non-GMO

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8.8

Nature Made

Nature Made Vitamin B12 1000 mcg, Dietary Supplement for Energy Metabolism Support, B12 Vitamins 1000 mcg, 150 Softgels, 150 Day Supply

Main Highlights

Energy metabolism support supplement(1): contains one 150 count bottle of Nature Made Vitamin B12 1000 mcg Softgels for a 150 day supply
These Nature Made B12 1000mcg softgels help break down food into energy that your body can use all day long
Vitamin B 12 helps support brain cell function and mood health (2)
Vitamin B12 is important for proper red blood cell formation and helps reduce fatigue for those low in B12 vitamins
Adults take one B 12 vitamin softgel daily with water and a meal
This gluten free Vitamin B12 supplement has no synthetic dyes and no artificial flavors
United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin and Supplement Brand*
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

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8.6

Bronson

Bronson Vitamin B12 1000mcg Once Daily Formula Non-GMO, 250 Vegetarian Tablets

Main Highlights

High Quality & Great Value: Bronson Basics Vitamin B12 provides 1000 MCG of B12 per tablet in a 250 day supply bottle. We strive to support your good health and well-being through high quality supplements at the best value.
Daily Maintenance Formula: Providing 1000 MCG per tablet to help promote daily replenishment of Vitamin B12.
Superior Quality: Laboratory tested GMO-Free, Gluten-Free and Soy-Free. Bronson products are laboratory tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
cGMP Premium Standards: Every product manufactured by Bronson is put through a rigorous process to ensure purity, potency and integrity. Through our very own cGMP Registered New York Facility that complies with the most current regulations, we promise to deliver top-quality supplements that are consistently verified for quality and safety
Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical professionals since our inception in 1960.

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8.3

NatureWise

NatureWise Vitamin B12 500 mcg - B12 Supplement for Energy + Mental Clarity & Nervous System Support - Easy-to-Swallow, Vegan & Non-GMO - USA Manufactured - 100 Tablets[100-Day Supply]

Main Highlights

ENERGY METABOLISM SUPPORT: Every easy-to-swallow tablet delivers 500 mcg of Vitamin B12 to support the production of cellular energy and help convert food into energy.*
CARDIOVASCULAR HEALTH: Vitamin B12 is important for cardiovascular health, function, and balance in homocysteine levels.*
BRAIN & NERVE HEALTH SUPPORT: Vitamin B12 may support your cognitive function due to its important role in the nervous system.* B12 contributes to the body's production of neurotransmitters, which affect clarity, mood, and memory.*
ADDED CALCIUM FOR BONE & NERVE HEALTH: We've added 80 mg of calcium to help support bone strength, while B12 helps bone-building cells, nerve and muscle function.*
SUPERIOR VEGAN FORMULATION: NatureWise Vitamin B12 500 mcg tablets have no artificial colors, synthetic dyes, flavors, or GMOs, and they are vegan. They are free of gluten, wheat, dairy, eggs, soy, milk, peanuts, tree nuts, shellfish, fish and sesame.
3rd PARTY TESTED, USA MANUFACTURED: NatureWise Vitamin B12 500 mcg tablets are 3rd party tested for purity and efficacy and manufactured in the USA with high-quality ingredients from around the world in a cGMP-certified facility.

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8.1

Nature's Bounty

Nature's Bounty Vitamin B12 1000 mcg Supplements, Supports Energy Metabolism, 200 Ct

Main Highlights

SUPPORTS CELLULAR ENERGY HEALTH (1): Nature's Bounty Vitamin B-12 1000 mcg aids in converting food into cellular energy (1)
CARDIOVASCULAR SUPPORT (1): Vitamin B-12 supplements contribute to the health of your cardiovascular and circulatory systems (1)
MAINTAINS HEALTHY NERVES (1): Great for nerve health, B-12 vitamin helps maintain healthy nerve cells (1)
EASY TO SWALLOW: These Vitamin B-12 tablets are coated so they are easy to swallow, providing convenience in your daily vitamin regimen
TRUSTED WELLNESS: From trusted wellness experts, these B-12 Vitamins are made with quality ingredients, backed by 50 years of scientific research

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8.1

NatureWise

NatureWise Vitamin B12 1000 mcg - Dietary Supplement for Supporting Energy Metabolism, Mental Clarity, Nervous System Health - Easy-to-Swallow, Soy & Gluten-Free, Non-GMO - 150 Count[150-Day Supply]

Main Highlights

ENERGY METABOLISM SUPPORT: Every easy-to-swallow softgel delivers 1000 mcg of Vitamin B12 to support the production of cellular energy and help convert food into energy.*
CARDIOVASCULAR HEALTH: Vitamin B12 is important for cardiovascular health, function, and balance in homocysteine levels.*
BRAIN & NERVE HEALTH SUPPORT: Vitamin B12 may support your cognitive function due to its important role in the nervous system. B12 contributes to the body's production of neurotransmitters, which affect clarity, mood, and memory.*
SUPERIOR FORMULATION WITH HALAL GELATIN: NatureWise Vitamin B12 softgels have no artificial colors, synthetic dyes, flavors, or GMOs, and they are made with halal gelatin. They are free of gluten, wheat, soy, dairy, eggs, peanuts, tree nuts, fish, or shellfish.
NSF-CONTENTS CERTIFIED, 3rd PARTY TESTED, QUALITY ASSURED: NatureWise Vitamin B12 1000 mcg softgels are 3rd party tested and NSF-Contents Certified for purity and efficacy and manufactured in the USA with high-quality ingredients from around the world in a cGMP-certified facility.

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Our Best Overall Choice

Best Choice

9.7

Nutricost

Nutricost Vitamin B12 (Methylcobalamin) 2000mcg, 240 Capsules - Vegetarian Caps, Non-GMO, Gluten Free B12 Supplement

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

240 Capsules of Vitamin B12 In Each Bottle
2,000mcg of Vitamin B12 (Methylcobalamin) in each (Vegetarian) Capsule
High Quality B12, Vegetarian Friendly, Non-GMO, Gluten Free
Tested by Independent (3rd Party), ISO-Accredited Laboratories
Manufactured in an NSF Certified, GMP Compliant, FDA Registered Facility

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