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A 41-year-old female asked:

Can antibiotics affect menstrual cycle and cause period to come earlier than expected?

1 doctor answer2 doctors weighed in
Dr. Wayne Ingram
Specializes in Obstetrics and Gynecology
Rarely: Antibiotics should not affect the menstrual cycle length unless you had an infection and the antibiotic resolved the issue.
Dr. James Blachly
Specializes in Hematology and Oncology
I should also note that if you are on oral contraceptive pills, certain antibiotics can decrease their levels to ineffective levels, in some women.
Nov 14, 2015

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Similar questions

A 41-year-old member asked:

Could antibiotics affect your menstrual cycle for several cycles?

1 doctor answer1 doctor weighed in
Dr. Nurit Winkler
Fertility Medicine 26 years experience
No: Antibiotics usually don't affect your menstrual cycle but the underlying condition for which you are taking the antibiotics can. Any physical stress as an illness and/or emotional stress can affect ovulation and with that the menstrual cycle.

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Last updated Nov 14, 2015

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