Magnesium L-Threonate 270 Capsules

Magnesium L-Threonate with Magtein — The Only Magnesium Proven to Raise Brain Magnesium Levels

Dr. Mercola Magnesium L-Threonate uses Magtein® — the patented magnesium L-threonate form developed by MIT researchers Dr. Guosong Liu and colleagues — as the first and only form of magnesium clinically demonstrated in published peer-reviewed studies to effectively cross the blood-brain barrier and significantly increase magnesium concentrations in the cerebrospinal fluid and brain tissue. This is a meaningful distinction: virtually all other magnesium supplements increase serum magnesium and may improve general tissue magnesium status, but they have minimal impact on brain magnesium — which is regulated independently and is critical for synaptic plasticity, the cellular mechanism underlying memory formation, learning, and cognitive flexibility.

Each 3-capsule serving provides 2,000mg of Magtein magnesium L-threonate, delivering approximately 144mg of elemental magnesium per serving. Animal studies demonstrated that Magtein supplementation increased brain magnesium levels by over 15% compared to other forms and improved both short-term and long-term memory performance. Human clinical trials have shown improvements in cognitive composite scores, with benefits appearing particularly meaningful in the context of age-associated cognitive decline. The morning/evening split dosing protocol (2 capsules AM, 1 capsule PM) is specifically designed to optimize brain magnesium levels throughout the day and support sleep quality at night.

• Magtein® magnesium L-threonate 2,000mg per serving (3 capsules) — MIT-patented form
• Only magnesium form proven to significantly raise brain magnesium levels
• Supports memory, learning, synaptic plasticity, and cognitive performance
• Split dosing protocol — 2 caps AM, 1 cap PM for optimal brain magnesium throughout the day
• 270 capsules — 90-day supply; non-GMO, gluten-free

Take 2 capsules in the morning and 1 capsule in the evening, or as directed by your healthcare provider.