If you can go to a doctor or even urget care, ask them for acyclovir. A customer of mine told me about it, and the blister NEVER develops. Don't waste your time with home remedies that still cause you to deal with a sore for a few days. Once I feel the tingle, I take a pill. Then I take a couple more the next few days, to make sure it doesn't develop. I never use the full prescription, I keep some of it for the next time, and always have the doctor give me up to three refills.
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