Solgar L-Glutamine provides 500mg of Glutamine per capsule. L-Glutamine, the most common amino acid, is abundant in muscles with 60% of total amino acids. While it is not considered essential, in times of increased demand and depletion, the body may not produce enough. For example, intense exercise can deplete glutamine stores and lead to muscle breakdown. Natural sources include grass-fed beef, wild-caught fish, cottage cheese, asparagus, and broccoli. Even with a balanced diet, a low dose of Solgar® 500mg L-Glutamine supplement can help replenish levels.