Lysine has the capacity to fight the symptoms of cold sores and herpes viruses and it reduces the number of outbreaks, severity and healing time. Lysine is an essential amino acid that is a necessary building block for all protein. It aids in the production of antibodies, hormones and enzymes, and helps in collagen formation and tissue repair - important for bones and connective tissues such as tendons, cartilage and skin. Blooms Lysine 500 may help reduce the number of outbreaks, severity and healing time of cold sores and herpes virus. Lysine is also beneficial for those recovering from surgery and sports injuries due to its role in building muscles protein, and it also has a role in calcium absorption as it is needed for proper growth and bone development in children.