I tend to get canker sores in my mouth, another form of herpes and I have since I was a young child. They got slightly worse with the Copaxone but I take one lysine capsule a day and it keeps them under control.

If they flare up, I take two capsules a day.

From what I understand, the virus can transfer from one area of the body to another as well, so I wouldn't panic or worry about it. Lysine is very safe but if you try it, check with your doctor first just so he'll know you take it. It's cheaper than RX meds for controlling herpes outbreaks.