Magnesium L-Threonate Research Guide

Full name: Magnesium L-Threonate (Magtein)

A highly bioavailable magnesium form developed to cross the blood-brain barrier and raise brain magnesium levels. Biohackers use it for sleep quality, cognition, and stress, distinct from magnesium forms used purely for muscle or bowel effects.

How Magnesium L-Threonate Works

The L-threonate carrier improves brain magnesium uptake, increasing synaptic density and NMDA receptor regulation. This supports memory, learning, and calmer nervous-system tone, and improves sleep architecture.

Dosing Protocol

• Typical dose: ~1.5-2 g compound (~144 mg elemental Mg)
• Frequency: Once or split daily
• Duration: Ongoing
• Route: Oral (capsule or powder)

Reported Benefits

• Improved sleep quality
• Cognitive and memory support
• Stress and anxiety reduction
• Brain-penetrant magnesium
• Minimal laxative effect
• Neuroprotective potential

Potential Side Effects

• Mild drowsiness
• Occasional headache
• Rare GI upset
• Low blood pressure at very high intake

Research Citations

1. Magnesium L-threonate and cognition (2016) - Elevated brain magnesium and improved memory and cognitive performance in aging adults.
2. Brain magnesium and synaptic density (2010) - Increased hippocampal synapse density and learning in animal models where other magnesium forms failed.

Related Sleep & Recovery Compounds

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