100% Vegetarian. Amino Acid Supplement. Beta-Alanine and Histidine Dipeptide. L-Carnosine is a dipeptide consisting of the two amino acids: histidine and beta-alanine. L-Carnosine is naturally produced in the body by the enzyme carnosine synthetase and is highly concentrated in the brain muscle and other tissues. As we age natural production of L-Carnosine drops. Supplementing the diet with L-Carnosine offers a beneficial way of increasing and maintaining L-Carnosine levels in the body. . Futurebiotics® L-Carnosine supplies 500 mg of pure L-Carnosine per vegetarian capsule. L-Carnosine should not be confused with L-Carnitine as they are different amino acids.