The interplay between arginine, lysine, and cold sores.Arginine is needed for cardiovascular health as well as growth and repair, but many wonder if they should avoid arginine if they suffer from cold sores. Lysine is an amino acid that offsets the effects of arginine. On this episode of Live Foreverish, Drs. Mike and Crystal discuss the arginine-herpes connection, foods high in arginine, and the role of lysine and cold sores.