A member asked:

I had a cold sore today and got a flu shot. i take valacyclovir to treat a cold sore. will the valacyclovir impact the fly shot if i take it today?

A doctor has provided 1 answer

No worries: Mild illnesses need not cause one to postpone a flu shot. The annual flu shot contains protection against Flu A and Flu B. It is ok for a person with cold sore symptoms or other minor problems to get a flu shot, if she does not have other major medical reasons for not getting the shot. Antiviral medication does not affect a flu shot injection. The shot has no live viruses in it.

Answered 10/19/2018

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