2 doctors weighed in:

Can taking Flagyl or metronidazole cause delays in my period?

2 doctors weighed in
Dr. Wayne Ingram
Obstetrics & Gynecology
1 doctor agrees

In brief: Possibly

If you are using Flagyl at the same time with the oral contraceptive pill, you could be pregnant due to preferential aborption of the Flagyl over the contraceptive leaving you "unprotected" for pregnancy.
Obtain a pregnancy test or see a md if no period within 3 additional days.

In brief: Possibly

If you are using Flagyl at the same time with the oral contraceptive pill, you could be pregnant due to preferential aborption of the Flagyl over the contraceptive leaving you "unprotected" for pregnancy.
Obtain a pregnancy test or see a md if no period within 3 additional days.
Dr. Wayne Ingram
Dr. Wayne Ingram
Thank
Get help from a real doctor now
Dr. Adam Levy
Board Certified, Obstetrics & Gynecology
35 years in practice
1M people helped
Continue
111,000 doctors available