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A member asked:

How long does it take zovirax (acyclovir) to get out your system after you stop taking it?

2 doctors weighed in across 2 answers
Dr. Michael Ein answered

Specializes in Infectious Disease

12 1/2-15 hours: The half life (time for elimination of half the drug) of acyclovir/zovirax is 2 1/2-3 hours in adults with normal kidney function. A drug is fully eliminated after 5 half lives. Therefore for Acyclovir it will be completely eliminated 12 1/2-15 hours after taking the last dose.

Answered 6/24/2014

4.8k views

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Dr. Charles Turck answered

Specializes in Pharmacology

How long it takes depends on the person, but for most people, the medication should be out of their systems by about 16 hours.

Answered 10/21/2022

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