Magnesium L-threonate (commonly sold under the brand name Magtein) is a form of magnesium specifically developed for its ability to cross the blood-brain barrier and increase magnesium levels in the brain. It is primarily used for cognitive support and sleep quality. The standard dose is 2000mg of the full magnesium L-threonate compound per day, which delivers approximately 144mg of elemental magnesium — this distinction matters because the 2000mg refers to compound weight, not elemental magnesium content. Serving sizes range from 2 to 4 capsules per dose depending on the brand. It is typically taken in the evening, 30–60 minutes before bed. Products below are ranked by cost at your chosen daily dose.
| # | Product | 30-day cost | Supply | Sticker | |
|---|---|---|---|---|---|
| 1 |
Magnesium L-Threonate Capsules, High Absorption Magnesium Supplement 1600mg, Chelated Magnesium for Brain, Cognitive, Sleep & Muscle Support, Gentle on Stomach, 120 Vegan Capsules
NATURE TARGET Store
|
$8.99 | 48d | $17.99 | View on Amazon |
| 2 |
180 Count | 2 Pack Magnesium L-Threonate Gummies 2000mg, Magnesium Threonate Supplement for Adults & Kids, Support Cognition, Restful Sleep & Muscle Health, Sugar Free, Vegan, Non-GMO
Zetelixia
|
$10.98 | 90d | $32.95 | View on Amazon |
| 3 |
3000mg Liposomal Magnesium Threonate Gummies, Magnesium Glycinate Supplements, Liposomal Enhance 98% Absorption, Intestinal Tolerance, Muscle & Nervous System Support for Adults
CocoaNee
|
$13.00 | 90d | $25.99 | View on Amazon |
| 4 |
2 Pack Liposomal Magnesium Threonate High-Potency 3000mg Gummies,Liposomal Enhance 98% Absorption,Magnesium L-Threonate Supplements, Muscle & Nervous System for Kids & Adults
Oakevlp
|
$13.49 | 90d | $26.98 | View on Amazon |
| 5 |
2 Pack Magnesium L-Threonate Gummies - 2000mg for Brain, Muscle & Nervous System Support. Sugar-Free Raspberry Flavor, 120 Count for Kids & Adults
VAJYKEWJY
|
$13.49 | 60d | $26.99 | View on Amazon |
| 6 |
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 Store
|
$14.00 | 60d | $27.99 | View on Amazon |
| 7 |
Magnesium L-Threonate, Citrate, Malate & Glycinate, 150 Chelated Pills, High Absorption Magnesium Supplement for Women and Men, Extra Strength Complex Capsules, Non-GMO & Gluten Free
ForestVibe Store
|
$14.99 | 25d | $24.99 | View on Amazon |
| 8 |
Jarrow Formulas Magnesium L-Threonate, MagMind Magtein Magnesium Supplement, Brain Supplements for Memory Support, 90 Veggie Capsules, Up to a 30 Day Supply
Jarrow Formulas Store
|
$16.70 | 60d | $33.40 | View on Amazon |
| 9 |
Magnesium L-Threonate 2000mg | 10-in-1 Supplement for Brain Health & Cognitive Support | High-Absorption Magnesium Threonate Capsules, 60 Count
RimTuku
|
$16.99 | 30d | $16.99 | View on Amazon |
| 10 |
KAL Think Magnesium L-Threonate 2000 mg | Learning, Brain Health & Memory Function Support w/Magtein | Vegan, No Gluten & Non-GMO | 60 Tablets
KAL Store
|
$17.24 | 30d | $34.49 | View on Amazon |
| 11 |
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 Store
|
$19.19 | 50d | $31.99 | View on Amazon |
| 12 |
Magnesium L-Threonate Drops: Focus & Memory Booster for Students, High Absorption Liquid Formula
Hodiary
|
$19.96 | 2d | $19.96 | View on Amazon |
| 13 |
Magnesium L-Threonate Liquid Drops 1500mg High Absorption Brain Supplement for Memory Focus Sleep Sugar Free Vegan 2.04 Fl Oz,GMP Certification Applies to Both Kids and Adults
SustainWell
|
$19.96 | 23d | $19.96 | View on Amazon |
| 14 |
1000mg Magnesium L-Threonate Gummies for Kids & Adults - Muscle & Nervous System Support, Vegan, Sugar-Free Strawberry Flavor, 60 Gummies
BVIVLOO Store
|
$20.99 | 15d | $20.99 | View on Amazon |
| 15 |
1000mg Magnesium L-Threonate Gummies for Kids & Adults - Muscle & Nervous System Support, Vegan, Sugar-Free Raspberry Flavor, 120 Gummies
BVIVLOO Store
|
$20.99 | 15d | $20.99 | View on Amazon |
| 16 |
Suzy Cohen MagFocus Magnesium L-Threonate Powder with Magtein (Mixed Berry) Plus Magnesium Glycinate for Wellness, Focus, and Cognition - Gluten-Free, Non-GMO, Vegetarian (60 Servings)
Script Essentials Store
|
$22.49 | 30d | $44.99 | View on Amazon |
| 17 |
Magnesium L-Threonate Gummies for Adults & Kids 2000mg – Brain Supplements for Memory and Focus - Calm Magnesium Gummies for Improved Sleep and Healthy Mind - 60 Count (Pack of 1)
Pharmlitalia Store
|
$26.99 | 30d | $26.99 | View on Amazon |
| 18 |
Horbäach Magtein Magnesium L-Threonate | 2000mg Supplement | 100 Capsules | for Men & Women | Non-GMO and Gluten Free
Horbäach Store
|
$27.23 | 33d | $29.95 | View on Amazon |
| 19 |
MYOXCIENCE Brain Mag | Magnesium L-Threonate Magtein & Magnesium Glycinate Powder (Unflavored) (60 Servings)
MYOXCIENCE Store
|
$27.50 | 30d | $55.00 | View on Amazon |
| 20 |
iMagT - Magnesium L-Threonate. Powder 100g by Sabre Sciences
Sabre Sciences
|
$28.38 | 30d | $56.76 | View on Amazon |
| 21 |
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
|
$29.48 | 60d | $58.95 | View on Amazon |
| 22 |
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 Store
|
$29.95 | 30d | $29.95 | View on Amazon |
| 23 |
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 Store
|
$29.95 | 30d | $29.95 | View on Amazon |
| 24 |
NOW Foods Supplements Magtein, Magnesium L-Threonate, Cognitive Support*, 120 Veg Capsules
NOW Foods Store
|
$29.96 | 40d | $39.95 | View on Amazon |
| 25 |
Bluebonnet Nutrition Magtein Magnesium L-Threonate, Brain Health*, Non-GMO, Vegan, Kosher Certified, Gluten-Free, Soy-Free, 90 Vegetable Capsules, 30 Servings
BlueBonnet Store
|
$29.96 | 2d | $29.96 | View on Amazon |
| 26 |
Magnesium L-Threonate Capsules, Original Patented Magtein™ Form of Magnesium (Mg), Improve Memory, Cognition and Sleep Quality (90 Capsules)
LIFE CAPX Store
|
$29.99 | 2d | $29.99 | View on Amazon |
| 27 |
Life Extension Neuro-Mag Magnesium L-Threonate, 150 Vegetarian Capsules, Magtein Supplement for Women and Men
Life Extension Store
|
$30.57 | 50d | $50.95 | View on Amazon |
| 28 |
Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules
Source Naturals Store
|
$30.79 | 30d | $30.79 | View on Amazon |
| 29 |
Magtein Magnesium L-Threonate, Glycinate & Taurate - MagTech Magnesium Powder - Sugar Free Lemonade Drink - 200mg Chelated Triple Complex - Supports Relaxation & Brain Health* - 30 Servings
NATURAL STACKS Store
|
$31.46 | 15d | $31.46 | View on Amazon |
| 30 |
Jarrow Formulas Magnesium L-Threonate, MagMind Productivity, High Absorption Magnesium, Brain Supplements for Memory and Focus, 60 Veggie Capsules, Up to a 30 Day Supply
Jarrow Formulas Store
|
$31.99 | 15d | $31.99 | View on Amazon |
| 31 |
1000mg Magnesium L-Threonate Gummies for Kids & Adults - Muscle & Nervous System Support, Vegan, Sugar-Free Strawberry Flavor, 120 Gummies
BVIVLOO Store
|
$32.99 | 15d | $32.99 | View on Amazon |
| 32 |
Nutricost Magnesium L-Threonate As Magtein 2000mg, 120 Capsules - Non-GMO, Gluten Free, Vegetarian Friendly
Nutricost Store
|
$33.71 | 40d | $44.95 | View on Amazon |
| 33 |
Dr. Mercola Magnesium L-Threonate, Magnesium Advanced Supplement with Magtein, 2000 mg per Serving, High Bioavailability for Cognitive Support, Memory & Brain Health, Non-GMO, Gluten Free, 90 Capsule
Dr. Mercola Store
|
$34.97 | 30d | $34.97 | View on Amazon |
| 34 |
Forest Leaf Magnesium L-Threonate Magtein Capsules - 2000mg Magnesium Threonate Supplement Supports Cognitive Function, Focus, Brain, Deep Calm and Sleep for Men & Women | 90 Powder Veg Caps
ForestLeaf Store
|
$34.99 | 30d | $34.99 | View on Amazon |
| 35 |
Qunol Q-Mag Magnesium L-Threonate Tablets, 2000mg of Magtein to Help Support Cognitive Performance, Improve Mental Alertness & Productivity, Supports Restful Sleep, High Absorption, 60 Count
Qunol Store
|
$34.99 | 30d | $34.99 | View on Amazon |
| 36 |
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 Store
|
$35.94 | 25d | $29.95 | View on Amazon |
| 37 |
Metagenics Magnesium L-Threonate - Magtein Magnesium for Brain Health, Memory, Learning & Cognitive Support - Clinically Studied Bioavailable Form - Non-GMO, Gluten-Free, Vegan - 120 Capsules
Metagenics Store
|
$36.25 | 39d | $72.50 | View on Amazon |
| 38 |
NAOMI Magnesium L-Threonate with 2,000mg Patented Magtein®, High Absorption Elemental Magnesium, Memory Supplement - Brain Health, Focus, Nerve Support, Heart Health, Natural Sleep Aid, 60 Veggie Caps
NAOMI Store
|
$38.99 | 30d | $38.99 | View on Amazon |
| 39 |
Qunol Brain Health Memory Plus, Magnesium L-Threonate & Citicoline, Clinically Tested Ingredients to Improve Memory, Focus, Attention and Productivity, 60 Count (Pack of 1)
Qunol Store
|
$44.96 | 15d | $44.96 | View on Amazon |
| 40 |
Ekkovision Magtein Magnesium L-Threonate, Memory & Cognitive Function Support, Magnesium Supplement with Essential Minerals for Men & Women, 2000 MG Per Serving, 120 Easy-to-Swallow Capsules
Ekkovision Store
|
$44.99 | 2d | $44.99 | View on Amazon |
| 41 |
Codeage Liposomal Magnesium L-Threonate Supplement, Patented Magtein Magnesium Threonate for Brain Health, Memory and Cognitive Function Support, Bioavailable, Non-GMO - 90 Capsules
Codeage Store
|
$44.99 | 30d | $44.99 | View on Amazon |
| 42 |
XYMOGEN OptiMag Neuro - Magnesium L-Threonate with Albion Chelates - Brain, Stress & Sleep Support - Bioavailable Magnesium Complex - Vegan, Gluten-Free, & Non-GMO - 90 Capsules
XYMOGEN Store
|
$61.99 | 15d | $61.99 | View on Amazon |
| 43 |
Designs for Health NeuroMag Bioavailable Magnesium L-Threonate - Chelated Magnesium Supplement from Magtein for Brain Health & Cognitive Function, Support Focus & Sleep* (90 Vegan Capsules)
Designs for Health Store
|
$72.49 | 30d | $72.49 | View on Amazon |
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