I got a cold sore.
Right after the flu. I used to get them every other month or so, but I haven't had one in almost four years. They used to come when I had had little sleep, was malnurished, and had been exposed to big changes in heat, i.e. strong sunlight or frost. This time around, only the intermittent sleep applies, although I think the flu probably did manage to weaken me.
I used to use Zovir, a lip paste of sorts, but this time I was told that it requires a prescription. So I tried a different one, called Abreva, made by Glaxo Smith Kline. That sounds like the name of a law firm. And it might just as well be. Who else would sell you a tube of paste, the size of a paperclip, that holds only a few drops, and costs more than 17 dollars? Has to be lawyers.
Anyway. This stuff doesn't fight the cold sore. At all. It isn't designed for that. It merely helps it heal quicker, once your lip has become a bleeding wound. Which is perfectly understandable. After all, you wouldn't want to kill off the source of the problem, the impetus for people to go out and buy your stuff, now would you?
Of course not.