L-Carnosine (beta-alanyl-L-histidine) is a dipeptide, consisting of alanine and histidine. It is naturally found in high concentrations in muscles and nerve tissues and its levels are known to decrease with age. L-Carnosine protects cell and tissue structures during the aging process through its free-radical neutralization and membrane-stabilizing functions.Ingredients L-Carnosine (-alanyl-L-histidine)Free Form Contains no sugar, salt, yeast, wheat gluten, corn, soy, milk, egg, shellfish or preservatives