Magnesium glycinate is a special form of magnesium chelated with glycine. It is one of the most bioavailable and absorbable forms of magnesium and also the least likely to induce diarrhea. Glycine is a large molecule, this amino acid acts as a neurotransmitter with anxiolytic properties, enhancing the relaxing effect of magnesium itself. How to use Take one tablet a day with food or a glass of water.