NOW Foods L-Lysine 500 mg 250 Tablets provides an economical, high-count supply of this essential amino acid that is critical for collagen synthesis, calcium absorption, immune function, and proper enzyme and hormone production. L-Lysine is particularly important for those following plant-based diets, as lysine is the most limited essential amino acid in plant proteins. It is also one of the most widely used supplements for managing the frequency and severity of cold sore outbreaks caused by the herpes simplex virus by maintaining a favorable arginine-to-lysine ratio.

250 tablets per bottle for a multi-month supply. Non-GMO and produced in a GMP-certified facility.