A 32-year-old female asked:
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i have a cold sore on my lip can i use zovirax (acyclovir) ? but the cold sore has a crack. please help!!

1 doctor answer
Dr. Robert Vanderbrook
22 years experience Family Medicine
Yes you can: Zovirax (acyclovir) is effective. Acyclovir pills may be more effective and less irritating to your already cracked lip. Avoid touching or licking your lip.
Answered on Oct 6, 2014
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Common: You may need to be on an oral drug to prevent recurrence. Talk to your doctor about this.
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