2 doctors weighed in:

How quickly does abreva work?

2 doctors weighed in
1 doctor agrees

In brief: See below:

It was shown to shorten the healing by 17.
5 hours on average (95% confidence interval: 2 to 22 hours) in a placebo-controlled trial.Three other trials showed negative results, but these were not published. Studies showed that the average healing time of a recurrent oral-facial herpes simplex episode-treated patients was approximately one day shorter than placebo.

In brief: See below:

It was shown to shorten the healing by 17.
5 hours on average (95% confidence interval: 2 to 22 hours) in a placebo-controlled trial.Three other trials showed negative results, but these were not published. Studies showed that the average healing time of a recurrent oral-facial herpes simplex episode-treated patients was approximately one day shorter than placebo.
Dr. Michael H. T. Sia
Dr. Michael H. T. Sia
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