Abreva
"I get 1-2 cold sore out breaks a year and if not immediately addressed can stick around for a month. I have tried probably every remedy out there before abreva came out and nothing ever did the trick. Once hearing about abreva via tv advertising I decided to give it a try. My first experience with it wasnt the greatest and that was mainly because i didnt properly use it. Once I figured out just what to do once I feel the cold sore coming on, it has completely changed my life in the manner of cold sores. I went from having to deal with them for up to a month at a time to getting rid of the cold sore within a couple of days and completely unnoticeable. I have been using abreva for about 3 years now and haven't had a troublesome sore since! :)"