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Magnesium L-Threonate

The only magnesium form proven to cross the blood-brain barrier

★ 4.4 / 5.0 Editors' score

Magnesium L-Threonate is a paid Memory Enhancement supplement — The only magnesium form proven to cross the blood-brain barrier It offers 6 core capabilities, including Crosses blood-brain barrier, MIT-developed Magtein form, Increases synaptic density. Pricing is paid, starting at $29.99/bottle. It is rated 4.4/5 in our memory enhancement directory, with its main trade-off being more expensive than other magnesium forms. Magnesium L-Threonate is a good fit for anyone comparing memory enhancement options.

Key Facts

Category Memory Enhancement
Pricing model paid
Starting price $29.99/bottle
Rating 4.4 / 5.0
Best for Memory Enhancement
Key features 6
Last updated 2026-02-23

Overview

Magnesium L-Threonate (Magtein) is the only form of magnesium shown to effectively increase brain magnesium levels. Developed at MIT, it enhances synaptic density, supports memory and learning, and improves sleep quality. It addresses the widespread magnesium deficiency that impairs cognitive function in an estimated 50%+ of the population.

Official site unavailable at our last check (July 2026) — the product may have been discontinued or rebranded.

Key Features

  • ✓ Crosses blood-brain barrier
  • ✓ MIT-developed Magtein form
  • ✓ Increases synaptic density
  • ✓ Memory and learning enhancement
  • ✓ Sleep quality improvement
  • ✓ Addresses common deficiency

Pros

  • ✅ Unique brain-bioavailable magnesium
  • ✅ Improves both cognition and sleep
  • ✅ Addresses widespread deficiency
  • ✅ Strong research backing

Cons

  • ❌ More expensive than other magnesium forms
  • ❌ Lower elemental magnesium per dose
  • ❌ Multiple capsules per serving
  • ❌ Benefits most for those deficient

Pricing

Model: paid

Starting at: $29.99/bottle

Compare Magnesium L-Threonate

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Frequently Asked Questions

What is Magnesium L-Threonate?
Magnesium L-Threonate (Magtein) is the only form of magnesium shown to effectively increase brain magnesium levels. Developed at MIT, it enhances synaptic density, supports memory and learning, and improves sleep quality. It addresses the widespread magnesium deficiency that impairs cognitive function in an estimated 50%+ of the population.
How much does Magnesium L-Threonate cost?
Magnesium L-Threonate starts at $29.99/bottle. The pricing model is paid.
What are the main features of Magnesium L-Threonate?
Key features include: Crosses blood-brain barrier, MIT-developed Magtein form, Increases synaptic density, Memory and learning enhancement, Sleep quality improvement, Addresses common deficiency.
Who is Magnesium L-Threonate best for?
Magnesium L-Threonate is a good fit for anyone comparing memory enhancement options, and is rated 4.4/5 in this category.
What are the limitations of Magnesium L-Threonate?
Reported trade-offs include: More expensive than other magnesium forms; Lower elemental magnesium per dose; Multiple capsules per serving; Benefits most for those deficient.
What are the best Magnesium L-Threonate alternatives?
See our full list of Magnesium L-Threonate alternatives, with side-by-side ratings, pricing, and pros & cons, on the Magnesium L-Threonate alternatives page.

Last updated: 2026-02-23