2 doctors weighed in:

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

2 doctors weighed in
Dr. Joel Gallant
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. Joel Gallant
Dr. Joel Gallant
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