herpes simplex
"I have suffered from cold sores since I was a toddler. It was miserable getting them several times a year as a child with no remedy. Just two+ weeks of misery and embarassment because those suckers would always sit right in the middle of my bottom lip. When abreva came out I was so desparate to try it and it works for me. If you use it the 2nd day of getting a cold sore , no it is not going to work as well because the virus is now going nice and strong. It will help with the pain and aggravation and will still help shorten its life span a bit but not as much as within the first 8hrs of getting one. I also use it in conjunction with vicks vapor rub. Sucker dies in under a week and def cuts a lot of the painful scab stage out!"