cold sores
"I tend to get really bad cold sores when I get sick, sun burned or chew my lips too much. After battling the flu a big sucker popped up, covering almost half of my entire bottom lip. It came on a Thursday and was completely gone by that Sunday. The only drawback is I still got the cluster of blisters - it's almost as Denavir draws out the virus and kills it fast. Fastest cold sore relief I have ever used!"