LambertsL-Lysine 1000mg provides a grade of lysine called USP which is the quality used in clinical nutrition products (very cheap lysine products may contain animal feed-grade lysine).

Lysine is an essential amino acid and is therefore one of the eight amino acids that our bodies cannot make, so we are completely reliant on our diets to provide sufficient lysine. It is used by the body in a number of ways and, particularly in the formation of collagen, the most abundant protein in the body.