The main function: **Magnesium, high absorption formula - just as nature intended. Take a daily dose of magnesium glycinate-the most bioavailable forms of this important mineral. Also contains Zinc,Vitamin D3 B6 . *Contains Zinc and Vegan Vitamin D3 - Magnesium and zinc are cofactors for vitamin D, and all three are essential components of hundreds of enzymatic processes. *Nearly half of Americans are deficient in magnesium, zinc, or vitamin D3, and getting enough of these nutrients is absolutely critical to a healthy lifestyle. Instruction: take two capsules with a glass water at dinner or before 2 hour sleep.