3 doctors weighed in:

How long does antibiotic Flagyl stay in your body after a weekly dosage?

3 doctors weighed in
Dr. John Leander Po
Internal Medicine - Infectious Disease
2 doctors agree

In brief: About a day...

The average half life (time to reduce the amount of drug to 1/2 of its original amount) is 8 hours for Metronidazole (flagyl is the brand name).
If liver problems exist, then it can take even longer.

In brief: About a day...

The average half life (time to reduce the amount of drug to 1/2 of its original amount) is 8 hours for Metronidazole (flagyl is the brand name).
If liver problems exist, then it can take even longer.
Dr. John Leander Po
Dr. John Leander Po
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