10 Best B12 Third Party Tested of 2025

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

May 2026 Edition

Editor's Choice

9.7

Garden of Life

Garden of Life Vitamin Code Raw B-12 - 30 Capsules, 1,000mcg Whole Food B12 Methylcobalamin for Energy, Vegan Methylcobalamin Vitamin plus Probiotics and Enzymes, Gluten Free Supplements

Editor's bottom line:

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

Main Highlights

VITAMIN B-12: Essential to protect the body against anemia and support a healthy central nervous system, b 12 vitamin helps maintain healthy nerve cells and red blood cells and is also needed to make DNA, the genetic material in all cells
ANEMIA SUPPORT: This RAW, food created vitamin B12 provides metabolism support, mental & physical energy, central nervous system health, anemia support and digestive support
VEGETARIAN SUPPORT: Since B-12 is found predominantly in animal and dairy products, our vitamin b-12 tablet can help prevent deficiency-caused decreased energy, occasional constipation, anemia and fatigue
PROBIOTICS AND ENZYMES: Our plant based b-12 vitamin includes a RAW probiotic and enzyme blend for digestive support and vegetable blend for additional nutritional support
VEGAN VITAMIN B12: Our real food vegan b12 vitamin is RAW, Gluten Free, and Dairy Free with No Binders or Fillers

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Picked by 397 people today

9.5

Nutricost

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

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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9.5

Nutricost

Nutricost Vitamin B12 (Methylcobalamin) 1000mcg, 240 Capsules - Vegetarian, Non-GMO & Gluten Free B12 Supplement

Main Highlights

1000mcg (1mg) of Vitamin B12 Per Serving
240 Servings Per Bottle, 1 Capsule is 1 Serving
Vegetarian, Non-GMO & Gluten Free
Each Batch is Tested by Independent, ISO-Accredited Laboratories
Made in an NSF Certified, GMP Compliant, FDA Registered Facility.

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9.2

Sports Research

Sports Research® Vitamin B12 as Methylcobalamin 2000mcg - Plant Based B12 w/Coconut MCT Oil for Energy Metabolism Support - Vegan Certified · Non-GMO · Gluten Free - 120 Liquid Caps

Main Highlights

METABOLIC ENERGY: Sports Research Methyl B12 helps the body move fatty acids to the mitochondria, where theyre used for energy in the metabolic process. This process is important for how we process carbs, produce insulin, handle proteins, create red blood cells, and more.
CELLULAR SUPPORT: Methylcobalamin is a key part of the body's energy processes, helping cells work properly. It works with other nutrients to support energy and metabolism. Since Methyl B12 is the active form of vitamin B12, your body can use it right away without needing to convert it.*
LIQUID VEGGIE CAPSULE: This Methyl B12 is encapsulated in a carrageenan-free, Non-GMO Project Verified and Vegan Certified Liquid Veggie Capsule.
DEDICATED TO QUALITY: Each liquid veggie capsule contains methylcobalamin, a form of vitamin B12 thats essential for your body.for a high-quality product free of harsh chemicals, fillers or binders that are also gluten-free, and soy-free.
THE SPORTS RESEARCH DIFFERENCE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out.

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9.0

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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8.8

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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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

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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8.1

Pure Encapsulations

Pure Encapsulations B12 Folate - Energy Supplement to Support Nerves, Energy Metabolism & Cognitive Support* - with Vitamin B Folate as Metafolin - 60 Capsules

Main Highlights

Premium Folate Supplement: Vitamin B12 and folate help convert carbohydrates into energy and break down proteins in the body; provides metabolism support*
Nervous System Support: Vitamin B12 (methylcobalamin) and folate (L-5-MTHF) support the nervous system, and function as hair, skin, and liver aids.*
Cognitive Support: Folate is essential for fetal neural development; B12 is an important nutrient for memory and cognitive support*
Supports Gut Health: Support G.I. tract thanks to the active form of the B12 vitamin, methylcobalamin; also a liver support supplement*
Pure Difference: What we leave out matters, too; Pure Encapsulations products are free from common allergens, artificial or unnecessary ingredients, and GMOs

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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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Our Best Overall Choice

Best Choice

9.7

Garden of Life

Garden of Life Vitamin Code Raw B-12 - 30 Capsules, 1,000mcg Whole Food B12 Methylcobalamin for Energy, Vegan Methylcobalamin Vitamin plus Probiotics and Enzymes, Gluten Free Supplements

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

VITAMIN B-12: Essential to protect the body against anemia and support a healthy central nervous system, b 12 vitamin helps maintain healthy nerve cells and red blood cells and is also needed to make DNA, the genetic material in all cells
ANEMIA SUPPORT: This RAW, food created vitamin B12 provides metabolism support, mental & physical energy, central nervous system health, anemia support and digestive support
VEGETARIAN SUPPORT: Since B-12 is found predominantly in animal and dairy products, our vitamin b-12 tablet can help prevent deficiency-caused decreased energy, occasional constipation, anemia and fatigue
PROBIOTICS AND ENZYMES: Our plant based b-12 vitamin includes a RAW probiotic and enzyme blend for digestive support and vegetable blend for additional nutritional support
VEGAN VITAMIN B12: Our real food vegan b12 vitamin is RAW, Gluten Free, and Dairy Free with No Binders or Fillers

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