10 Best Magnesium Glycinate Third Party Tested of 2025

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

March 2026 Edition

Editor's Choice

9.7

Double Wood Supplements

Magnesium Glycinate 400mg | 180 Capsules | Sleep, Muscle, & Heart Support | Vegan, Third Party Tested, Gluten Free, Non-GMO, by Double Wood Supplements

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Editor's bottom line:

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

Main Highlights

YOURE LIKELY MAGNESIUM DEFICIENT - According to World Health Organization statistics, as much as 75% of the U.S. adult population does not meet the U.S. Food and Drug Administrations Recommended Daily Intake of 420 mg
EASY ON THE STOMACH: Magnesium Glycinate is created by bonding the elemental magnesium with the amino acid glycine, resulting in a form of magnesium that is easier on the stomach than other forms such as magnesium oxide
SIX MONTH SUPPLY: Each capsule contains 400mg of Magnesium Bisglycinate (aka glycinate)
ROOTED IN QUALITY: Manufactured and Tested in the USA from Globally Sourced Ingredients. Double Wood's Magnesium Glycinate 400mg is manufactured and tested for microbes and heavy metals right here in the USA from Globally Sourced Ingredients. Plus, it is Non-GMO and gluten-free
WE BOTTLE WELLNESS: At Double Wood we provide pure, potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing

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Picked by 397 people today

9.5

NatureBell

Naturebell Pure Magnesium Glycinate 500mg, 240 Veggie Capsules | 100% Chelated & Purified – 3rd Party Tested, Vegan Friendly, Non-GMO, Fiiler Free

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Main Highlights

Pure Magnesium Glycinate 500mg 240 natural veggie capsules without fillers, convenient one-a-day formula lasting up to 8 months.
Chelated and purified magnesium glycinate for antioxidant protection, superior absorption, gentle digestion, and optimal utilization.
One of the most bioavailable forms of magnesium.
Helps replenish essential vitamin and mineral levels daily, working together to aid vital bodily functions in both men and women.

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9.5

Sports Research

Sports Research® Magnesium Glycinate - Supports Restful Sleep & Enzymatic Processes - 160 mg Chelated Magnesium - Vegan Capsule - 90 Count

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Main Highlights

SUPPORTS RESTFUL SLEEP: Sports Research Magnesium Glycinate promotes restful sleep by stimulating gamma-aminobutyric acid (GABA)an essential neurotransmitter in the nervous system responsible for helping the body relax and fall asleep.*
CHELATED FOR ABSORPTION: Our Magnesium Glycinate is chelated, showing superior absorption and bioavailability compared to non-chelated forms. That means youre more likely to reap more nutrients per serving than not.*
SUPERIOR FORMULA: Besides our chelated formula, every serving of our Magnesium Glycinate is formulated with Sunflower Lecithin and Coconut MCT Oil to aid absorption further. Thats a powerful blend of ingredients optimized for impact.*
DEDICATED TO QUALITY: We know the importance of having options when choosing the right products. Our Magnesium Glycinate comes in a vegan capsule or liquid softgel form, offering 160 mg of high-quality material per serving.
THE SPORTS RESEARCH DIFFERENCE: We hold our supplements to a higher standard. This supplement is soy and gluten-free, IGEN non-GMO tested and made in cGMP-compliant facilities in the USA.

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9.2

Pure Encapsulations

Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism* - with Magnesium Glycinate - 90 Capsules

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Main Highlights

Heart Health Supplements: This magnesium glycinate capsule activates the enzymes necessary for neuromuscular contractions, cardiac function, and more*
Energy & Bone Support: Magnesium supports metabolism of carbs and amino acids; supports energy production and use of calcium, phosphorus, sodium, and potassium*
Overall Health & Nutrient Metabolism: This magnesium glycinate supplement helps the metabolism and utilization of vitamin B6, vitamin C, vitamin E, and more*
Sleep & Relaxation Aid: Magnesium glycinate may help to support the sleep cycle and aid a sense of relaxation by increasing total dietary magnesium intake daily*
Pure Difference: Our supplements are made with premium ingredients sourced from trusted suppliers, then manufactured and tested to verify potency and purity; Pure Encapsulations products are free from common allergens, unnecessary binders, fillers, and preservatives, and GMOs

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9.0

THORNE

THORNE - Magnesium Glycinate - Supports Restful Sleep, Muscle Relaxation, Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten, Dairy & Soy-Free - 90 Servings

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Main Highlights

Whole Body Wellness: Magnesium, a crucial mineral because it is involved in more than 600 of the body's enzymatic reactions, supports the brain, bones, muscles, and lungs, as well as provides support for healthy metabolism*
Rest and Relax: Because the formula promotes restful sleep, it is an ideal product for active individuals wanting to unwind*
Cellular Energy Production: Magnesium is a cofactor for enzymes involved in cellular energy production*
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

SOLARAY

SOLARAY Magnesium Glycinate Capsules, Chelated Magnesium Bisglycinate w/BioPerine, Higher Absorption Magnesium Supplement - Bones, Muscles, Heart Support, Vegan (30 Servings, 120 VegCaps)

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Main Highlights

Essential Mag Glycinate Involved in more than 300 enzymatic reactions in the body, magnesium helps maintain the proper function of your nervous system, as well as support strong bones, muscle function, cellular energy, heart health and more.*
Magnesium Calm Magnesium Glycinate 350mg supports muscle function, promotes feelings of calm and helps support a healthy sleep cycle.* Each serving of our magnesium supplement is divided into 4 capsules so you can take it throughout the day for better utilization by the body.
High Absorption Formula Designed for higher absorption, gentle digestion and maximum benefit, our fully chelated Magnesium Glycinate is made by reacting magnesium with the free-form amino acid glycine and includes 5 mg of BioPerine to make the magnesium more available to the body.*
Eco-Friendly To reduce our carbon footprint, Solaray bottles are made from post-consumer recycled resin, helping keep plastic out of our landfills and oceans. Weve also begun installing solar panels as an alternative energy source at our Ogden, Utah, facilityto power the processes and products that help you Live Brighter.
Trusted Brand Formulated with Non-GMO Project Certified Magnesium Glycinate, made in our GMP-certified facility and tested in our state-of-the-art lab in Utah to bring you the best possible quality. Like all Solaray products, our vegan magnesium comes with a 60-Day Money-Back Guarantee.

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8.6

Double Wood Supplements

Magnesium Glycinate 400mg, 90 Capsules (Vegan Safe, Third Party Tested, Gluten Free, Non-GMO) High Absorption Magnesium by Double Wood Supplements

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Main Highlights

YOURE LIKELY MAGNESIUM DEFICIENT - According to World Health Organization statistics, as much as 75% of the U.S. adult population does not meet the U.S. Food and Drug Administrations Recommended Daily Intake of 420 mg
EASY ON THE STOMACH: Magnesium Glycinate is created by bonding the elemental magnesium with the amino acid glycine, resulting in a form of magnesium that is easier on the stomach than other forms such as magnesium oxide
SIX MONTH SUPPLY: Each capsule contains 400mg of Magnesium Bisglycinate (aka glycinate), 60 mg Elemental Magnesium
ROOTED IN QUALITY: Manufactured and Tested in the USA from Globally Sourced Ingredients. Double Wood's Magnesium Glycinate 400mg is manufactured and tested for safety right here in the USA from Globally Sourced Ingredients. Plus, it is Non-GMO and gluten-free
WE BOTTLE WELLNESS: At Double Wood we provide pure and potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing

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8.3

Pure Encapsulations

Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism* - with Magnesium Glycinate - 180 Capsules

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Main Highlights

Heart Health Supplements: This magnesium glycinate capsule activates the enzymes necessary for neuromuscular contractions, cardiac function, and more*
Energy & Bone Support: Magnesium supports metabolism of carbs and amino acids; supports energy production and use of calcium, phosphorus, sodium, and potassium*
Overall Health & Nutrient Metabolism: This magnesium glycinate supplement helps the metabolism and utilization of vitamin B6, vitamin C, vitamin E, and more*
Sleep & Relaxation Aid: Magnesium glycinate may help to support the sleep cycle and aid a sense of relaxation by increasing total dietary magnesium intake daily*
Pure Difference: Our supplements are made with premium ingredients sourced from trusted suppliers, then manufactured and tested to verify potency and purity; Pure Encapsulations products are free from common allergens, unnecessary binders, fillers, and preservatives, and GMOs

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8.1

Nature Made

Nature Made Magnesium Glycinate 200 mg per Serving, Magnesium Supplement for Muscle, Heart, Nerve and Bone Support, 60 Magnesium Bisglycinate Capsules, 30 Day Supply

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Main Highlights

Magnesium Bisglycinate Capsules; Heart, nerve and bone support supplement: contains one 60 count bottle of Nature Made Magnesium Glycinate 200 mg per serving Capsules for a 30-day supply
A high absorption Magnesium supplement for women and men(1) that helps convert food into cellular energy and supports muscle relaxation, bone health, heart health, nerve health
Gentle on the stomach, Magnesium Glycinate helps relax the body, and is a highly bioavailable form of magnesium(1) that is chelated
Magnesium helps support the production of Melatonin
Adults take two Magnesium capsules daily with water and a meal
This gluten free Magnesium 200mg supplement contains no color added and no artificial flavors
#1 Pharmacist Recommended Vitamin & 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

NOW Foods

NOW Foods Supplements, Magnesium Glycinate 100 mg, Highly Absorbable Form, 180 Tablets

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Main Highlights

HIGHLY ABSORBABLE FORM: Magnesium glycinate utilizes magnesium bound to the amino acid glycine, which facilitates intestinal absorption*
SUPPORTS HEALTHY MUSCLE, NERVE, AND HEART FUNCTIONS*: Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization*
SUGGESTED USAGE: Take 2 tablets 1 to 2 times daily with food
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products

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Our Best Overall Choice

Best Choice

9.7

Double Wood Supplements

Magnesium Glycinate 400mg | 180 Capsules | Sleep, Muscle, & Heart Support | Vegan, Third Party Tested, Gluten Free, Non-GMO, by Double Wood Supplements

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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

YOURE LIKELY MAGNESIUM DEFICIENT - According to World Health Organization statistics, as much as 75% of the U.S. adult population does not meet the U.S. Food and Drug Administrations Recommended Daily Intake of 420 mg
EASY ON THE STOMACH: Magnesium Glycinate is created by bonding the elemental magnesium with the amino acid glycine, resulting in a form of magnesium that is easier on the stomach than other forms such as magnesium oxide
SIX MONTH SUPPLY: Each capsule contains 400mg of Magnesium Bisglycinate (aka glycinate)
ROOTED IN QUALITY: Manufactured and Tested in the USA from Globally Sourced Ingredients. Double Wood's Magnesium Glycinate 400mg is manufactured and tested for microbes and heavy metals right here in the USA from Globally Sourced Ingredients. Plus, it is Non-GMO and gluten-free
WE BOTTLE WELLNESS: At Double Wood we provide pure, potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing

Show Price

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