Best Magtein Supplement

Peter | 07-01-2026

With so many great Best Magtein Supplement to pick from, like those from brands such as NOW Foods,Double Wood Supplements,Life Extension,Magtein,AMANDEAN, it can be tricky for customers to decide what to buy. But after extensive research, we’ve discovered the stand-out Best Magtein Supplement currently on the market.

Our team rigorously tested numerous products available to consumers. The one that stands at the top of our list is NOW Foods Best Magtein Supplement, thanks to its impressive performance and features. Below you’ll find more of our top-rated picks, along with insightful analysis from our seasoned experts. Check out their thoughts before making your purchasing choice. With this guide backing your decision, you’re sure to end up with a Best Magtein Supplement you’ll love.

Editor's Choice
NOW Foods Supplements, Magtein™ with patented form of Magnesium (Mg), Cognitive Support*, 90 Veg
NOW Foods Supplements, Magtein™ with patented form of Magnesium (Mg), Cognitive Support*, 90 Veg
Premium Pick
Magtein - Magnesium L-Threonate Supplement, Memory, Focus, Sleep & Brain Health Formula for Men &
Magtein - Magnesium L-Threonate Supplement, Memory, Focus, Sleep & Brain Health Formula for Men &
Budget Pick
Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most
Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most

Top 10 Best Magtein Supplement

We researched and compared the top products in the Best Magtein Supplement category to provide you with these recommendations.

1. NOW Foods Supplements, Magtein™ with patented form of Magnesium (Mg), Cognitive Support*, 90 Veg

NOW Foods Supplements, Magtein™ with patented form of Magnesium (Mg), Cognitive Support*, 90 Veg
9.8

Now Foods

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  • 2 grams of Magnesium L-Threonate for cognitive support*
  • A patented form of magnesium that readily crosses the blood-brain barrier for utilization in the brain*
  • Take 3 capsules daily. Best when taken in divided doses (take 1 capsule in the morning and take 2 capsules two hours before sleep).
  • Supports brain health and may facilitate learning and memory, as well as a relaxed mood*
  • Made and quality tested in the USA with globally sourced ingredients*

2. Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most

Magnesium L Threonate, Magtein, Sleep and Cognitive Support – High Absorption – Most
9.1

Double Wood Supplements

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  • 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
  • CLINICALLY STUDIED FOR COGNITIVE WELLNESS: Magnesium L-Threonate has been studied for its role in supporting memory, learning, and overall cognitive performance.
  • 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
  • MAGNESIUM FOR SLEEP: Magnesium Threonate is commonly taken alongside L-Theanine and Apigenin in a sleep cocktail for nighttime assistance
  • 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

3. Life Extension Neuro-Mag Magnesium L-Threonate, Memory Health, Quick Thinking, Cognitive Health

Life Extension Neuro-Mag Magnesium L-Threonate, Memory Health, Quick Thinking, Cognitive Health
8.3

Life Extension

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  • Quick thinking: Want to stay sharp? Try magnesium L-threonate: this form of magnesium helped maintain executive function and quick thinking in clinical studies.
  • Short-term memory: magnesium L-threonate helps support your working or short term memory health, so you dont forget where you put your car keys, etc.
  • 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.
  • 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.
  • Live your healthiest life - For over 40 years, weve 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. Thats why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

4. Magtein - Magnesium L-Threonate Supplement, Memory, Focus, Sleep & Brain Health Formula for Men &

Magtein - Magnesium L-Threonate Supplement, Memory, Focus, Sleep & Brain Health Formula for Men &
9.5

Magtein

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  • MAGTEIN: UNIQUE PATENTED FORMULA - Magtein Magnesium L Threonate supplement features Vitamin C and Vitamin D for enhanced brain absorption, supporting optimal cognitive function for men and women
  • MAGNESIUM SUPPLEMENT BENEFITS - Our magnesium capsules promote increased energy, improved digestion, restful sleep, reduced fatigue, and balanced calcium and magnesium levels
  • OPTIMAL BRAIN SUPPORT - Magnesium L-Threonate is the only form of magnesium clinically shown to cross the blood-brain barrier, supporting cognitive function, memory, and learning
  • HIGH-QUALITY INGREDIENTS - Free from fillers, artificial colors, flavors, preservatives, and Magnesium Stearate, our capsules are non-GMO, kosher, and gluten-free
  • Manufactured in the USA with US and imported materials

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

Now Foods Supplements Magtein, Magnesium L-Threonate, Cognitive Support*, 180 Veg Capsules
8.9

Now Foods

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  • Magnesium (Mg) is an essential mineral best known for its role in bone and nervous system function*
  • Recent research has demonstrated that it is also critical for normal brain health and normal cognitive function by maintaining the density and stability of neuronal synapses.* However, most forms of Mg are not easily absorbed into the nervous system*
  • Magtein is a patented form of Mg that readily crosses the blood-brain barrier for utilization in the brain.* Laboratory studies indicate that Magtein supports brain health and may facilitate learning and memory, as well as a relaxed mood*
  • 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.
  • Packaged in the USA by a family owned and operated company since 1968

6. AMANDEAN Magtein Magnesium Complex. L-Threonate, Glycinate, Malate Triple Blend Chelated Magnesium

AMANDEAN Magtein Magnesium Complex. L-Threonate, Glycinate, Malate Triple Blend Chelated Magnesium
8.5

Amandean

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  • Unlock Your Brain's Potential: Our Magnesium L-Threonate Complex with Magtein is clinically shown to cross the blood-brain barrier and support cognitive function for early brain development & old age.*
  • 3-in-1 Formula for Maximum Benefits: Our high absorption magnesium triple complex is blended with bisglycinate chelate + DiMagnesium malate (both Albion TRAACS) in an easy-to-swallow veggie capsule for 270mg of elemental magnesium per dose. (3 capsules). This is nearly twice the dosage of a straight Magtein product. There are no added stearates or silica, unlike other brands.
  • Sleep Better, Feel Better: Our magnesium supplement can help improve the quality of sleep by relaxing the central nervous system that regulates melatonin and GABA. Increased levels of magnesium support healthy sleep cycles. The amino acid glycine also promotes restful and quality sleep, as well as reduced stress and relaxation.*
  • Energy, Bones, & Muscle Recovery: Daily magnesium intake helps to boost energy at a cellular level, improve physical performance, exercise recovery, and muscle cramping. Healthy levels contribute to bone density & strength, critical for healthy aging. Mag is vital for the absorption of essential minerals in the body.*
  • Quality You Can Trust: Amandean uses only the highest quality premium ingredients. All three forms of magnesium are patented and have many clinical studies behind them. Clean Non-GMO ingredients that are 3rd party lab-tested & packaged at a cGMP facility for purity & safety. Contains no artificial flavors, preservatives, or stearates. 90-day satisfaction guarantee.

7. Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced

Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced
8.7

Sports Research

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  • 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.
  • 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.
  • 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!
  • 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.

8. Magnesium L Threonate, Magtein™, Brain Supplement for Memory, Focus, Sleep and Cognitive Support,

Magnesium L Threonate, Magtein™, Brain Supplement for Memory, Focus, Sleep and Cognitive Support,
8.3

Teraputics

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  • MOST SUPERIOR FORM OF MAGNESIUM: Magnesium L-Threonate is the only high absorption Magnesium vitamin thats been shown to effectively raise concentrations of Magnesium in the brain
  • PATENTED MAGNESIUM: Developed by doctors at MIT, L-Threonate is a mineral chelated agent that is able to greatly enhance the bioavailability of Magnesium supplements, making them highly absorbable
  • PROMOTES MEMORY AND OVERALL COGNITIVE FUNCTION: Research has shown that Magtein Magnesium L-Threonate improved recall, slowed age-related memory decline, and helped create new neural pathways
  • FROM THE USA: Formulated right here in the USA in an FDA registered and GMP compliant facility; this complex undergoes testing two times by a third party to meet maximum purity and quality standards

9. Horbäach Magtein Magnesium L-Threonate | 2000mg Supplement | 100 Capsules | for Men & Women |

Horbäach Magtein Magnesium L-Threonate | 2000mg Supplement | 100 Capsules | for Men & Women |
7.9

Horbäach

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  • MAGNESIUM THREONATE: Horbaach Magtein is a highly innovative form of this essential nutrient
  • SCIENTIFIC SUPPORT: From 2,000 mg of Magnesium L-Threonate per serving
  • EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency
  • HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Artificial Flavor, Artificial Color, Preservatives & Non-GMO

10. Magtein Magnesium L-Threonate to Improve Cognition, Focus, Memory, Sleep Quality and Brain Health

Magtein Magnesium L-Threonate to Improve Cognition, Focus, Memory, Sleep Quality and Brain Health
8

Magceutics

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  • MAGTEIN: UNIQUE PATENTED FORMULA - Magceutics Magnesium L Threonate supplement features Vitamin C and Vitamin D for enhanced brain absorption, supporting optimal cognitive function for men and women
  • MAGNESIUM SUPPLEMENT BENEFITS - Our magnesium capsules promote increased energy, improved digestion, restful sleep, reduced fatigue, and balanced calcium and magnesium levels
  • EASY-TO-SWALLOW CAPSULES - These magnesium capsules are smaller and easier to swallow than our original formula, making them ideal for the elderly and anyone who has trouble swallowing larger pills
  • OPTIMAL BRAIN SUPPORT - Magnesium L-Threonate is the only form of magnesium clinically shown to cross the blood-brain barrier, supporting cognitive function, memory, and learning
  • Manufactured in the USA with US and imported materials

Peter

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