Natural Factors L-Lysine 500 mg 90 Capsules

Natural Factors L-Lysine provides 1,000 mg of free-form L-lysine hydrochloride with added calcium. L-lysine is an essential amino acid involved in protein synthesis, tissue repair, collagen production, and immune function. It is also commonly used in routines focused on reducing the recurrence of cold sores (HSV-1).

If you're building a stack focused on immune support, tissue recovery, collagen production, or essential amino acid intake, this product may fit well within that routine.