I Wish I Could Kill Cold Sores!!

I haven't had a cold in like 6 years and I just got one yesterday out of no where so unexpected =( ironicaly I am actually suffering from a cold...With my stuffy nose and sorethroat the cold sore just makes everything worse. There's so many cures for other diseases but they can't find a cure for cold sores come on atleast make better treatments they hurt really bad:(