10 Best Best Magnesium Threonate Brand - May 2026

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Last Updated: 05-06-2026

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

Double Wood Supplements

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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Best value

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

9.5

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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

9.2

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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

9.1

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LIFE CAPX Magnesium L-Threonate Capsules, Original Patented Magtein™ Form of Magnesium (Mg), Improve Memory, Cognition and Sleep Quality (90 Capsules)

LIFE CAPX

8.8

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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

Teraputics

8.6

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Kappa Nutrition Powered by Magbrain™ Magnesium L-Threonate Plant-Based, 150 Vegan Capsules, 420mg Elemental Magnesium (3 Capsules) from 2,253mg, Brain, Sleep & Muscle Support.

KAPPA NUTRITION

8.4

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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

8.2

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

NOW Foods

8.1

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