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Products in this section contain the amino acid l-lysine which is used to shorten the frequency, severity and duration of cold sore eruptions.1 Keep in mind that the virus which causes cold sore eruptions is an opportunistic organism that takes advantage of a weakened immune system. So in addition to using a Cold Sore Formula or lysine, be sure to support your immune system with daily use of a multivitamin and whey protein supplement.
1. Altern Med Rev. 2006 Jun;11(2):93-101.