Does Valtrex work if you already have blisters?
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4 min read
According to the U.S. FDA, the efficacy of Valtrex initiated after the development of clinical signs of a cold sore has not been established, confirming that timing is a key factor in treatment success. The question, **Does Valtrex work if you already have blisters?**, is a common concern for many, and the nuance lies in understanding that while the primary window for optimal effect has passed, there may still be a reduced benefit.
