A member asked:

Fever blisters: zovirax (acyclovir) cream or ointment is better?

A doctor has provided 1 answer
Dr. Joel Gallant answered

Specializes in Infectious Disease

Neither: Neither is particularly effective. The best treatment to shorten the course of a cold sore or fever blister is oral valacyclovir or acyclovir, if it's given very early at the first onset of symptoms.

Answered 2/24/2018

4.8k views

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