Sona L-Lysine is an essential amino acid that serves as a building block for all proteins, which the body cannot produce on its own. It is particularly beneficial for individuals who suffer from cold sores and mouth ulcers, as it helps inhibit viral replication and shorten the duration of outbreaks. L-Lysine is also necessary for growth and development, collagen formation, and tissue repair, including muscle protein repair. This product is available in a convenient 45-tablet pack and is free from artificial flavors and preservatives.