10 Best magnesium threonate 3rd party tested

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Last Updated: 06-26-2025

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Pure Magnesium L-Threonate 125 vcaps 144mg of Elemental Magnesium (Magtein Magnesium Supplements) 90+35 vcaps Free - PURE NORTH NATURALS - 3rd Party Tested Formulated and Made in Canada

PURE NORTH NATURALS

9.8

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Life Extension Neuro-Mag Magnesium L-Threonate, Magnesium L-threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules

Life Extension

9.6

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Best Value

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

Double Wood Supplements

9.5

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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 – 2000 mg, 100 Vegan Capsules

Teraputics

9.2

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Sports Research Magtein Magnesium L-Threonate Capsules - Magnesium Supplement for Memory, Focus & Cognition - Magnesium L Threonate Supports Brain Health, Sleep & Mood - 2000mg, 90 Capsules for Adults

Sports Research

9.1

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ELMNT Triple Sleep Magnesium Threonate w. Apigenin, Theanine & Magtein Magnesium L-Threonate - Highest Absorption Magnesium Supplement Capsules Natural Sleep Aid for Deep Sleep Calm & Stress Relief

TERRA ELMNT

8.8

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BioEmblem Triple Magnesium Complex | 300mg of Magnesium Glycinate, Malate, & Citrate for Muscles, Nerves, & Energy | High Absorption | Vegan, Non-GMO | 90 Capsules

BioEmblem

8.6

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Magnesium Glycinate Capsules 500mg | 240 Count | Supplement for Sleep, Heart & Muscle Support | 100% Chelated & Purified, 3rd Party Tested, Non-GMO & Gluten Free

NatureBell

8.4

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L-Theanine Supplement 200mg, 120 Capsules (Soy Free, Gluten Free, Non-GMO, Third Party Tested) Synergy with Magnesium L-Threonate and Apigenin by Double Wood

Double Wood Supplements

8.2

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Magnesium Glycinate 400mg, 180 Capsules (Vegan Safe, Third Party Tested, Gluten Free, Non-GMO) High Absorption Magnesium by Double Wood Supplements

Double Wood Supplements

8.1

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Pure Magnesium L-Threonate 125 vcaps 144mg of Elemental Magnesium (Magtein Magnesium Supplements) 90+35 vcaps Free - PURE NORTH NATURALS - 3rd Party Tested Formulated and Made in Canada

Life Extension Neuro-Mag Magnesium L-Threonate, Magnesium L-threonate, Memory Health, Quick Thinking, Cognitive Health Support, Vegetarian, Non-GMO, 90 Vegetarian Capsules

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

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 Magtein Magnesium L-Threonate Capsules - Magnesium Supplement for Memory, Focus & Cognition - Magnesium L Threonate Supports Brain Health, Sleep & Mood - 2000mg, 90 Capsules for Adults

ELMNT Triple Sleep Magnesium Threonate w. Apigenin, Theanine & Magtein Magnesium L-Threonate - Highest Absorption Magnesium Supplement Capsules Natural Sleep Aid for Deep Sleep Calm & Stress Relief

BioEmblem Triple Magnesium Complex | 300mg of Magnesium Glycinate, Malate, & Citrate for Muscles, Nerves, & Energy | High Absorption | Vegan, Non-GMO | 90 Capsules

Magnesium Glycinate Capsules 500mg | 240 Count | Supplement for Sleep, Heart & Muscle Support | 100% Chelated & Purified, 3rd Party Tested, Non-GMO & Gluten Free

L-Theanine Supplement 200mg, 120 Capsules (Soy Free, Gluten Free, Non-GMO, Third Party Tested) Synergy with Magnesium L-Threonate and Apigenin by Double Wood

Magnesium Glycinate 400mg, 180 Capsules (Vegan Safe, Third Party Tested, Gluten Free, Non-GMO) High Absorption Magnesium by Double Wood Supplements

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