Magnesium L-threonate is a unique version of a naturally-occurring micronutrient that passes through the blood-brain barrier more effectively than any other form of magnesium, ensuring you get more of this critical nutrient delivered to where it’s needed most - your brain. Magnesium L-threonate can help increase synaptic density & promotes synaptic plasticity, which may help aid in cognitive function. Our magnesium L-threonate includes 2 g of Magtein per serving. Magnesium L-threonate is a highly-bioavailable magnesium that may support the calming & quieting of the brain which can aid in better quality sleep & focus.