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At the first sign of a cold sore, tingling, itching, palpable bump on the lip, etc., start treatment with an antiviral medication like acyclovir. A single dose of 400-800 mg. will cause the cold sore to stop developing and go away in a few hours. No vesicles or scab will develop if treatment is started right away. Acyclovir is a prescription medication in the USA but is very cheap. You can obtain a prescription for 30 pills for $5.00 or 90 pills for $10.00 at a certain big retailer. Keep the medication in your refrigerator and it will last you years.

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Laury Roob

Lvl 10
3y ago

What else can I help you with?