WHAT IS LYSINE? Lysine is an essential amino acid for the maintenance of good health. Lysine helps to reduce the recurrence of herpes simplex virus (HSV) infection (e.g. cold sores), and helps in collagen formation. HOW DOES LYSINE WORK? Lysine has many functions in the body because it is incorporated into many proteins, which are used by the body for a variety of purposes. The human body cannot produce L-Lysine and this important amino acid must be obtained from dietary intake. HOW MUCH LYSINE SHOULD I TAKE FOR HSV INFECTIONS? Reduce the recurrence of HSV infection: 1000 mg, 1 - 3 times daily