Amino acids are the building blocks of proteins within the body. They are classified as 'essential' or 'non-essential'. Essential amino acids cannot be produced by the body, but must come from diet or supplementation. L Lysine is an essential amino acid found in muscle tissue. Foods that contain L-lysine include meat, fish, dairy products, and eggs. This food supplement provides a dose of 500 mg of L-lysine in an easy-to-take vegan capsule. The amino acids within this supplement are presented in their free form state, meaning they do not require digestion, resulting in faster delivery to the body. How to use Take one to three capsules a day with meals.