NOW Foods L-Lysine Powder provides pure L-Lysine in a versatile powder form that can be mixed into water, juice, or smoothies for easy daily supplementation. Lysine is an essential amino acid the body cannot produce on its own and must obtain through diet or supplementation. It plays a critical role in collagen synthesis, calcium absorption, immune function, and the production of enzymes and hormones. Lysine supplementation is widely used to support skin health, bone density, and to help manage recurrent cold sore outbreaks by balancing the arginine-to-lysine ratio.

This 1 lb bag provides an economical, extended supply. Non-GMO and free of common allergens.