Faulding® Remedies Lysine 500 is a dietary supplement which works to reduce the severity of the outbreak and decrease the severity of symptoms such as itching, burning and pain associated with cold sores. Lysine relieves the symptoms of cold sores. It is an essential amino acid that plays a role in calcium absorption, and supports the manufacture of collagen in the body and wound healing. Faulding® Remedies Lysine 500 assists to improve or maintain general well being.