10 Best magnesium threonate 3rd party tested

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Last Updated: 11-30-2025

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MAGPLUS+ Magnesium L-Threonate w Apigenin & L Theanine, 1500mg 7-Ingredient Sleep Blend - Brain & Memory Support - Liposomal Magnesium Threonate Supplement - Capsules Supports Health, Rest & Mood

Plus+Ultra

9.8

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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

Life Extension

9.6

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Magnesium L-Threonate Complex | 4 Highly Bioavailable Forms - (Patented Magtein™) Magnesium L-Threonate, Glycinate, Malate, Taurate | No Oxide | Brain Health, Sleep Support | 300mg Serving | 120 Caps

American Research Supplements

9.5

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Best Value

- 7%

Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, 120 Vegan Capsules, Brain, Sleep & Muscle Support.

KAPPA NUTRITION

9.2

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- 31%

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

Double Wood Supplements

9.1

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Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, 90 Vegan Capsules, Brain, Sleep & Muscle Support.

KAPPA NUTRITION

8.8

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- 27%

Magnesium L Threonate, Magtein™, Brain Supplement for Memory, Focus, Sleep and Cognitive Support, High Absorption Magnesium L-Threonate, Non-GMO, No Laxative Effect – 2000 mg, 100 Vegan Capsules

Teraputics

8.6

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- 30%

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

Sports Research

8.4

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Pure Organic Magnesium L-Threonate 144 MG, Bioavailable + High-Absorption + Max Potency & Purity |90 Magnesium Threonate Capsules, 30-Day Supply| Brain Health, Better Sleep, & Cognitive Health

Leaping Lynx

8.2

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- 18%

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

Double Wood Supplements

8.1

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MAGPLUS+ Magnesium L-Threonate w Apigenin & L Theanine, 1500mg 7-Ingredient Sleep Blend - Brain & Memory Support - Liposomal Magnesium Threonate Supplement - Capsules Supports Health, Rest & Mood

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

Magnesium L-Threonate Complex | 4 Highly Bioavailable Forms - (Patented Magtein™) Magnesium L-Threonate, Glycinate, Malate, Taurate | No Oxide | Brain Health, Sleep Support | 300mg Serving | 120 Caps

Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, 120 Vegan Capsules, Brain, Sleep & Muscle Support.

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

Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, 90 Vegan Capsules, Brain, Sleep & Muscle Support.

Magnesium L Threonate, Magtein™, Brain Supplement for Memory, Focus, Sleep and Cognitive Support, High Absorption Magnesium L-Threonate, Non-GMO, No Laxative Effect – 2000 mg, 100 Vegan Capsules

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

Pure Organic Magnesium L-Threonate 144 MG, Bioavailable + High-Absorption + Max Potency & Purity |90 Magnesium Threonate Capsules, 30-Day Supply| Brain Health, Better Sleep, & Cognitive Health

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

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