L-Lysine 500 mg from Webber Naturals is an essential amino acid, which means the body cannot manufacture it. L-Lysine can be used to reduce the recurrence of cold sores by inhibiting the herpes simplex virus (HSV). It also helps in the formation of collagen to support hair, skin, nails, and bones.L-Lysine from Webber Naturals contains an essential amino acid to help reduce the recurrence of herpes simplex virus (HSV) infections responsible for cold sores.L-lysine is a source of an essential amino acid involved in muscle protein synthesis and the maintenance of good health. It is needed for the crosslinking of collagen polypeptides that stabilize and give structure to collagen throughout the body. Proper collagen formation is fundamental for maintaining healthy connective tissues in the skin, bones, and blood vessels.Because our bodies cannot make L-lysine, it needs to be consumed through dietary sources. L-Lysine is a popular supplement among people prone to HSV infections. Many people supplement with L-lysine as part of their nutritional strategy to help keep cold sore flare-ups under control.L-Lysine is a free-form amino acid, which is more available for the body to use than when consumed as part of a protein from food. Each vegetarian capsule contains 500 mg of L-lysine, offering a flexible dose of up to two capsules taken three times per day. This formula is non-GMO and a wonderful supplement for vegetarians, vegans, and anyone who may not be getting enough L-lysine through their diet.