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A 28-year-old female asked:

Will a 100mg prescription of cyclimycin taken for 30 days impact the effectiveness of the contraceptive qlaira?

1 doctor answer1 doctor weighed in
Dr. John Berryman
Obstetrics and Gynecology 54 years experience
Antibiotics and BCPs: There are some antibiotics which can reduce the absorption of the hormones in oral contraceptives, but unless there is breakthrough bleeding, the effectiveness is not diminished. If spotting or bleeding occurs,use other forms of birth control until the cyclimycin has ended.

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Last updated Aug 26, 2020
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