The fluid inside cold sore blisters is filled with the active virus ... cold sore into the other person's mucous membranes ...

QUESTION: I used Zovirax ointment for two decades while I had employer-funded insurance. Once I went on Medicare, I learned ...

Medically reviewed by Katlein Franca, MD In some ways, the features of a cold sore vs. a pimple on the lip line are very ...