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A 23-year-old female asked:

can amoxicilin antibiotics have an effect on the menstrual cycle when taken alongside contraceptive pills? (late period but not pregnant)

2 doctor answers3 doctors weighed in
Dr. Philip Miller
A Verified Doctoranswered
A US doctor answeredLearn more
Possibly: not usual; however any mediciation can alter your cycle-rarely amoxicilliun.
Dr. Gerard Honore
Fertility Medicine 29 years experience
Not the antibiotic: Antibiotics do not affect your period. The amoxicillin did not make your period late. It is not entirely clear whether they affect birth control pill effectiveness, although it is common to recommend using a backup method in that situation. Good wishes.

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Last updated Sep 29, 2016

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