One capsule of the vegan-friendly Gnarly Mg Glycinate contains 200mg of magnesium with no added fillers. Magnesium glycinate is one of the most bioavailable forms of magnesium available and taken daily may help with energy production as well as muscle and nerve function. Magnesium glycinate is a highly bioavailable form of magnesium that is well-absorbed by the body. Magnesium is involved in the synthesis of protein, fat, and nucleic acids; muscular activity; bone maintenance; and brain function. Magnesium plays an important role in the activation of vitamin D. Vitamin D deficiency is better corrected when both vitamin D and magnesium are taken together. Why did Gnarly switch from Mg Citrate to Mg Glycinate? While both magnesium citrate and magnesium glycinate are well-absorbed by the body and shown to elevate magnesium levels in the brain and muscles, magnesium glycinate is actually more likely to promote relaxation due to the presence of the amino acid glycine, a neurotransmitter that may promote calmness and stress reduction in the body.