Take about 2000 Mg amino acid L-Lysine for several weeks, decreasing as symptoms go away to about 500Mg a day maintenance dose. Helps stop outbreaks. I used to have outbreaks a long time ago, but haven't had a single outbreak in probably 15 years. Also stay away from any supplements containing amino acid L-Arginine, which makes it worse. Stess and hormone imbalances (i.e. steroid cycles) makes it worse.