An essential amino acid for the maintenance of good health. In addition it helps reduce the recurrence of herpes simplex virus (HSV) infection (e.g. cold sores), L-lysine also helps in collagen formation. Features: Gluten Free Helps to reduce the recurrence of herpes simplex virus (HSV) infection (e.g. cold sores) Essential amino acid required for protein synthesis, and muscle tissue repair Overall factor in the maintenance of general health.