No: The antibiotic penicillin should not change the timing of a menstrual period. However, having an illness (that required the antibiotic) might alter the period's timing.
Answered 1/7/2018
5.2k views
Agree w Dr. Kwok: The antibiotic should have no effect on your period. However, if your infection seriously taxed your body - that could be a cause.
Answered 1/7/2018
665 views
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