**Magtein** is a patented form of **Magnesium L-Threonate** — the only magnesium form shown in human trials to cross the blood-brain barrier and raise brain magnesium levels. At 2g per serving (3 capsules), you're getting the exact dose used in the clinical research on memory, learning, and cognitive function. That yields 144mg of elemental magnesium, which sits comfortably within the supplemental range for general magnesium benefits like muscle relaxation, sleep support, and stress management.

The brain-health angle is what sets this apart. If your goal is cognitive support — sharper recall, better focus, or age-related memory concerns — this delivers the studied dose in full. Magnesium deficiency is extremely common and often undetected, so even the baseline magnesium support here is meaningful for energy, mood, and nerve function.

The tradeoff is pill burden and total magnesium. Three capsules daily gives you just 144mg of elemental magnesium — well under the 310–420mg RDA for total intake. If you're looking for broader magnesium coverage for muscle cramps or heart health, you'd need to supplement additional magnesium in another form alongside this.