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Magnesium L-Threonate

Swanson
4.6
★ ★ ★ ★ ★
(2470 ratings)
Magnesium 48 mg
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Score95

A specialized brain-focused magnesium designed for cognitive support and mental clarity.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
General Health
Stress Relief
Energy
Heart Health

Score 95

A specialized brain-focused magnesium designed for cognitive support and mental clarity.

How scoring works
$35.19($0.39 per serving)
iHerb
$ 43.29
iHerb
$ 43.29
iHerb
$ 43.29
Amazon
$ 35.19
Walmart
$ 35.29
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Analysis

Magnesium L-Threonate is the only form of magnesium known to significantly cross the blood-brain barrier. While the elemental magnesium is lower at 48mg per capsule, its targeted delivery to the nervous system makes it highly effective for supporting memory and focus.

It fits best for individuals who are more concerned with mental performance and stress relief than general bone or heart support. It is a high-end, specialized form of the mineral for cognitive wellness.

Pros

  • Uses patented Magtein for brain absorption
  • Supports focus, memory, and mental calm
  • Very gentle on the digestive system
  • Clean, single-ingredient focus

Cons

  • Very low elemental magnesium for heart/bone goals
  • Premium price for a specialized form
  • Requires 3 capsules for the full Magtein dose

Warnings

  • May cause mild drowsiness in some users
  • Take with food to avoid any lightheadedness

Nutrient quality

94 Highest impact

Magtein is a superior form for brain-specific mineral delivery and is supported by clinical research. While the elemental dose per capsule is low, it is optimized for cognitive rather than systemic repletion.

Ingredient transparency

98 Highest impact

Labeling clearly identifies the use of the Magtein brand and provides the specific amount of elemental magnesium per serving. Disclosure is comprehensive and allows for precise monitoring of mineral intake.

Customer satisfaction

96 Highest impact

Strong ratings over a high number of reviews demonstrate consistent satisfaction with the cognitive benefits provided. Users frequently mention improved memory and sleep quality as key results.

Value for money

89 Highest impact

While the price per capsule is moderate, the cost per clinical dose of elemental magnesium is relatively high. The use of premium patented Magtein justifies the cost for those focusing on brain health.

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Goals

Impact
Highest effect
A Goal FitB Strength of SupportC CoverageA+ Formula Quality

Magtein Magnesium L-Threonate provides a specialized form of magnesium for foundational neurological support. This ingredient appears well aligned with goals for maintaining daily vitality and systemic health.

Magtein is a clinically validated, patented form known for its superior ability to support brain-related mineral status. Each capsule contributes meaningfully to daily requirements using an organic salt with high bioavailability.

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Impact
Highest effect
A- Goal FitB+ Strength of SupportC- CoverageA+ Formula Quality

Magnesium L-Threonate features the patented Magtein form for superior bioavailability and specific support for cognitive relaxation. This mineral appears well-aligned with reducing mental excitability and maintaining a calm physiological state.

While the elemental weight per capsule is lower than typical doses, Magtein's ability to cross the blood-brain barrier ensures high quality. The single-ingredient focus provides targeted support for the brain's nervous system during periods of mental stress.

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Impact
High effect
B Goal FitC Strength of SupportD CoverageA+ Formula Quality

Magnesium l-threonate is a specialized form of magnesium designed to support cognitive function and metabolic efficiency. Magnesium is a mandatory cofactor for ATP-dependent enzymes, making it fundamental for cellular energy production.

Magnesium is delivered via 670 mg of Magtein to ensure high bioavailability and brain penetration. While the elemental dose is lower than general energy supplements, the specialized form supports neurological vitality.

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Impact
High effect
B- Goal FitC Strength of SupportD- CoverageA Formula Quality

This supplement features Magtein, a patented form of Magnesium L-Threonate known for its high absorption. While primarily studied for cognitive benefits, magnesium is also fundamental for heart rhythm and vascular health.

The 48 mg elemental dose per capsule is relatively low for addressing systemic heart health needs. It provides a clean, single-ingredient focus for individuals prioritizing bioavailability over high elemental weight.

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Impact
Moderate effect
C- Goal FitC- Strength of SupportF CoverageB+ Formula Quality

Magnesium L-Threonate is a specialized form of magnesium designed primarily for cognitive health and brain penetration. While magnesium is essential for heart rhythm, the elemental yield in this form is relatively low for cardiovascular needs.

Providing 48mg of elemental magnesium per capsule, this supplement would require multiple servings to meet standard cardiovascular therapeutic targets. It uses the high-quality, patented Magtein form, which is excellent for bioavailability but targeted toward the central nervous system.

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Impact
Lower effect
D- Goal FitC- Strength of SupportF CoverageC Formula Quality

Magnesium L-threonate is a specialized form of the mineral optimized for crossing the blood-brain barrier to support cognitive health. While magnesium is involved in inhibiting hormone-binding proteins, this specific chelate is less focused on systemic endocrine support than other mineral salts.

Elemental yields per capsule are relatively low compared to standard nutritional requirements for hormone optimization. The logic of the formula is centered on neurology rather than steroidogenesis.

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Ingredients

IngredientAmount per serving
Magnesium (Magtein Magnesium L-Threonate)
48 mg
Magtein Magnesium L-Threonate
670 mg
Adults 18–50
Report overview
A+ Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyA+ Value
This cognitive supplement features the patented Magtein form for superior brain absorption. While the quality is high, the per-capsule dose is significantly below established therapeutic levels, necessitating multiple capsules per day.
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