Magnesium L Threonate - Focus and Memory Enhancer, Supports Nerve Function, Muscle Strength, Bone and Joint Health Function: Promote brain health, relieve fatigue Ingredients: Providing elemental magnesium, Magnesium L-Threonate Directions: Take two (2) capsules once daily Shipping: Ships within 48 hours on weekdays Shelf life: 2 years The only form of magnesium that supports magnesium levels in the brain: Magnesium L-Threonate is a breakthrough magnesium supplement. Highly bioavailable form of magnesium: L-Threonate is a mineral chelate that greatly increases the bioavailability of magnesium, making it highly absorbable. Magnesium aids sleep: Magnesium Threonate is often taken with L-Theanine and Apigenin in a sleep cocktail to help with a good night's sleep (Magnesium Threonate).