A member asked:

What can i use to prevent or cut the duration of a cold sore on its first stages? please help i think one is on it way

4 doctors weighed in across 2 answers

Starting an anti-: Viral at the first symptoms can stop it in its tracks. Acyclovir or valacyclovir work.

Answered 9/28/2016

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Prevention: Cold sore or more specifically aphthous ulcer can be prevented by avoiding a common foam detergent found in most toothpastes called sodium laurel sulfate. Switching to biotene or other toothpaste not containing this ingredient can be the cure in preventing this painful condition.

Answered 7/15/2015

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