How do i treat a cold sore? i have a cold sore on my lip that is about ready to go away but then another one showed up, how do i treat it?

Antiviral: There are both topical and oral antivirals that will shorten the course of a cold sore outbreak. The lesions come from herpes simplex virus (hsv) and will break out when you are stressed or your immune system is challenged. Treatment doses vary depending upon whether you're treating a new infection or preventing one. See your doctor for guidance.