Valacyclovir
"I have unfortunately been suffering from cold sores since my first outbreak when I was 1 year old and being 34 now a lot has changed. Back in my younger years I was bullied because of these sores that would appear around my mouth. carmex or  Blistex did not work and Lysine only assisted a bit.  When abreva came out $30 a small tube back then I jumped at the chance to try it and it did help me keep the blisters in one area instead of them spreading more.  It wasn't until a year ago "seriously" that I finally brought something up to my doctor who told me about valtrex and I was under the impression this was for genital herpes only. Living in hot AZ has been tough on handling my outbreaks but with Valtrex I can manage them more and love that"