Being uncovered to the sun or lawyer in my area stress can certainly add to the possibilty of getting an outbreak, so go ready and take the Super Lysine Plus with you always. The cream docosanol (Abreva) is sold over the counter. The Lysine 65 Residue in HIV-1 Reverse Transcriptase Operate and in Nucleoside Analog Drug Resistance. Garforth, S.J.