Famciclovir
"This is probably the best thing to have happened to me this year (discovering these magic pills). I had my first cold sore about 6 years ago and had been getting them 3-4xs a year and then it gradually went down to 1-2yr. I would normally let it run its course (usually 2 weeks ), which was not only embarrassing but painful, and treat it with over the counter gels and home remedies. My most recent one came back ALL over my top /bottom lip...so I got prescribed 1500mg, took them the 3rd day (by this day the bumps had already risen up and where visible), packed on some abreva and by morning the bumps were almost gone. My bottom lip cleared out and all that was left on top was redness. I cant stress enough how good these are."