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A member asked:
I took metronidazole for 7 days. 12 days later, my period came. however, day 1 of my period , the blood's so dark it's almost black. is this normal?
A doctor has provided 1 answer
Anecdotal evidence: Dark urine is a well know side effect of metronidazole. Although there are some anecdotal (internet) reports of dark periods, there does not seem to be strong evidence for or against this. It is best to see your ob/gyn or primary care provider.
Answered 6/23/2018
5.3k views
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