L-Lysine by Solgar is an essential amino acid that plays a vital role in protein synthesis and is important for the maintenance of overall health. It supports the immune system, assists in the production of collagen, and contributes to the body's ability to absorb calcium. This product is formulated with pure L-Lysine and contains no preservatives, color, or flavor. Solgar ensures high-quality ingredients and adherence to strict quality controls to deliver a premium product.