re: Cold sore remedies...any way to stop one once it has already gotten going?

I read one time to put honey on it. I figured I'd just take a spoonful of honey everyday with my coffee since honey helps with allergies and pollen (local honey only). I haven't had one in a couple of years and even when I do feel one under the skin it never becomes a blister. This might not help with your current one but will save you from getting one in the future.