Essential Amino Acid. For Balanced Nutritional Health. Coated for Easy Swallowing. Vegetarian Formula. Lysine is a indispensable amino acid that cannot be made by the body. Amino acids form the basis for protein which helps construct and maintain the critical structures in the body. Lysine is also used for the health and integrity of skin. These tablets are a great choice for vegetarians. . Smart Facts. Lysine is also used for the health and integrity of skin by promoting the production of collagen and tissue and maintenance.