Valacyclovir
"Seriously this product will change your life. I'm 22 & have had cold sores since I was little, I get them when I'm sick but now I have been getting them whenever I'm stressed out. Just this past year alone I have gotten one almost every other month & this month I've already gotten 2. It's really frustrating, & embarrassing. It takes 2 weeks to heal  and lately I have been left with big scars around my lips which are really noticeable. I happened to be at my OBGYN's office & I mentioned it to him, he prescribed me this medication & in just 2 days (2g every 12 hrs) my sore has already completely scabbed, and healed. Now I take 1 500 mg every day to help prevent any from coming, my doctor said it will cut down my sores from 5-6 a year to 1."