Magnesium glycinate, also known as magnesium diglycinate or magnesium bisglycinate, is the magnesium salt of glycine (one magnesium and two glycine molecules), and is sold as a dietary supplement. It contains 14.1% elemental magnesium by mass. Magnesium Glycinate Powder (20% MG) is a dietary supplement that provides a highly bioavailable form of magnesium. It is commonly used to support healthy muscle and nerve function, promote relaxation and restful sleep, and maintain healthy bone density. This powder is easy to mix into drinks or food and is suitable for individuals who may have difficulty swallowing pills. It is also free from common allergens and is suitable for vegetarians and vegans.