No: Metronidazole should not affect your menstrual cycle. Best wishes!
Answered 3/23/2015
3.1k views
Maybe: while yor menstrual cycle should not be affected by metronidazole, antibiotics my affect your birth control pills, rendering them less effective. So if you period is late, you might consider a pregnancy test.
Answered 3/23/2015
3.1k views
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