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Best magnesium threonates - April 2026

Last Updated - April 3, 2026

1
Best Choice
20% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Sports Research
20% Off

Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced Brain Health, Memory, Focus & Restful Sleep Support - Vegan · Non-GMO · Gluten Free - 180 Count

Sports Research

$47.16

$58.95
(20% Off)

More Details
Main highlights
- THE SPORTS RESEARCH DIFFERENCE: Created in 1980, Sports Research is a privately-owned business born from a passion for fitness, wellness, and healing. Our goal is to help people live their best lives through real, research-backed ingredients created for every body — inside and out. We're fully dedicated to sourcing the highest quality products from around the world, backed by third party testing. We all deserve the best in our quest for healthy living. Our mission is to give you just that.
- PREMIUM QUALITY: Sports Research takes pride in offering products that use only the best ingredients available so that you can have total peace of mind in the supplements that you are taking. Our magnesium supplement is verified non-GMO and free of gluten and gelatin.
- MANUFACTURED IN THE USA: Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins. For us, it's all about quality control - so you can have confidence in your dietary supplements. We offer ninety (90) magnesium pills for a one (1) month supply. Reap all the benefits of this powerful and healthy magnesium threonate supplement!
- MADE WITH MAGTEIN: Magtein is a patented compound called threonic acid developed by a group of MIT researchers. Magtein is the only form that effectively crosses the blood-brain barrier and increases magnesium levels in the brain, which is critical for improving cognitive function. Our easy-to-swallow Magtein magnesium L-threonate veggie capsules are the easiest, most convenient way to add this essential mineral to your daily diet.
- HIGHLY BIOAVAILABLE FORM: Magnesium L-threonate is the salt formed from mixing magnesium and threonic acid, a water-soluble substance derived from the metabolic breakdown of vitamin C. Easily absorbed, our magnesium L threonate capsules are used for their overall brain health benefits and may help support memory, focus, relaxation, mood, and cognition.
$47.16
$58.95 (20% Off)
2
Best Value
19% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Nature Made
19% Off

Nature Made Magnesium L-Threonate with Vitamin C & Vitamin D3, Provides 130 mg of Mag from 1800 mg Magnesium L Threonate, Cognitive Support Magnesium Supplement, 90 Capsules, 30 Day Supply

Nature Made

$40.49

$49.99
(19% Off)

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Main highlights
- 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
- These gluten free Magnesium L-Threonate capsules have no artificial flavors; Adults, take 3 capsules daily
- Magtein Magnesium L-Threonate is a magnesium supplement that was clinically studied to help support healthy cognitive function and mental sharpness in 12 weeks(1)
- Magnesium supports muscle relaxation, heart, nerve and bone health, and healthy aging; provides 130 mg of Magnesium from 1800 mg Magnesium L Threonate
- Magnesium helps support the production of Melatonin
- Made in the USA with quality global ingredients; #1 Pharmacist Recommended Vitamin and Supplement Brand*
- Cognitive & memory(1) support supplement: contains one 90 count bottle of Nature Made Magnesium L-Threonate with Vitamin C & Vitamin D 3 Capsules for a 30-day supply
$40.49
$49.99 (19% Off)
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Double Wood Supplements

Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most Bioavailable Form of Magnesium – 2,000 mg – 120 Capsules

Double Wood Supplements

$29.95

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Main highlights
- 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
- ONLY FORM OF MAGNESIUM ABLE TO SUPPORT MAGNESIUM LEVELS IN THE BRAIN: Magtein Magnesium L-Threonate is a unique magnesium breakthrough supplement and the only form of magnesium clinically proven to support magnesium levels in the brain
- MAGNESIUM FOR SLEEP: Magnesium Threonate is commonly taken alongside L-Theanine and Apigenin in a sleep cocktail for nighttime assistance
- HIGHLY BIOAVAILABLE FORM OF MAGNESIUM: L-Threonate is a mineral chelating agent that is able to greatly enhance the bioavailability of magnesium making it highly absorbable
- CLINICALLY STUDIED FOR COGNITIVE WELLNESS: Magnesium L-Threonate has been studied for its role in supporting memory, learning, and overall cognitive performance.
$29.95
4
10% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Double Wood Supplements
10% Off

Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most Bioavailable Form of Magnesium – 2,000 mg – 120 Capsules

Double Wood Supplements

$26.95

$29.95
(10% Off)

More Details
Main highlights
- 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
- ONLY FORM OF MAGNESIUM ABLE TO SUPPORT MAGNESIUM LEVELS IN THE BRAIN: Magtein Magnesium L-Threonate is a unique magnesium breakthrough supplement and the only form of magnesium clinically proven to support magnesium levels in the brain
- MAGNESIUM FOR SLEEP: Magnesium Threonate is commonly taken alongside L-Theanine and Apigenin in a sleep cocktail for nighttime assistance
- HIGHLY BIOAVAILABLE FORM OF MAGNESIUM: L-Threonate is a mineral chelating agent that is able to greatly enhance the bioavailability of magnesium making it highly absorbable
- CLINICALLY STUDIED FOR COGNITIVE WELLNESS: Magnesium L-Threonate has been studied for its role in supporting memory, learning, and overall cognitive performance.
$26.95
$29.95 (10% Off)
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Life Extension

Life Extension Neuro-Mag Magnesium L-Threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate

Life Extension

$30.79

More Details
Main highlights
- Short-term memory: magnesium L-threonate helps support your working or “short term” memory health, so you don’t forget where you put your car keys, etc.
- Quick thinking: Want to stay sharp? Try magnesium L-threonate: this form of magnesium helped maintain executive function and “quick thinking” in clinical studies.
- Live your healthiest life - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.
- Ingredients matter – We use the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
- Cognitive health: magnesium plays an important role in your brain, supporting cognitive function. Magnesium L-Threonate is a special form of magnesium well-studied for cognitive health.
$30.79

Best magnesium threonates - April 2026

Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced Brain Health, Memory, Focus & Restful Sleep Support - Vegan · Non-GMO · Gluten Free - 180 Count

Nature Made Magnesium L-Threonate with Vitamin C & Vitamin D3, Provides 130 mg of Mag from 1800 mg Magnesium L Threonate, Cognitive Support Magnesium Supplement, 90 Capsules, 30 Day Supply

Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most Bioavailable Form of Magnesium – 2,000 mg – 120 Capsules

Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most Bioavailable Form of Magnesium – 2,000 mg – 120 Capsules

Life Extension Neuro-Mag Magnesium L-Threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate

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Life Extension Neuro-Mag Magnesium L-Threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate

Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced Brain Health, Memory, Focus & Restful Sleep Support - Vegan · Non-GMO · Gluten Free - 90 Count

Magnesium L Threonate, Magtein, Brain Supplement for Memory, Focus, Sleep and Cognitive Support, High Absorption Magnesium L-Threonate, Non-GMO, No Laxative Effect – 2,000 mg, 120 Vegan Capsules

Magnesium L Threonate, Magtein, Brain Supplement for Memory, Focus, Sleep and Cognitive Support, High Absorption Magnesium L-Threonate, Non-GMO, No Laxative Effect – 2,000 mg, 120 Vegan Capsules

Nature Made Magnesium L-Threonate with Vitamin C & Vitamin D3, Provides 130 mg of Mag from 1800 mg Magnesium L Threonate, Cognitive Support Magnesium Supplement, 90 Capsules, 30 Day Supply

Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 60 Vegan Capsules, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, Brain, Sleep & Muscle Support.

Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 60 Vegan Capsules, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, Brain, Sleep & Muscle Support.

Magnesium L-Threonate 2,000mg and Magnesium Glycinate 400mg | 90 Vegetarian Capsules | Muscle Health, Better Sleep & Cognitive Health|High-Absorption | Non-GMO, Gluten-Free

Magnesium L-Threonate 2,000mg and Magnesium Glycinate 400mg | 90 Vegetarian Capsules | Muscle Health, Better Sleep & Cognitive Health|High-Absorption | Non-GMO, Gluten-Free

Now Foods Supplements Magtein, Magnesium L-Threonate, Cognitive Support*, 180 Veg Capsules

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