A member asked:

Can doxycycline hyclate 100g and/or spironolactone 100g decrease the effectiveness of birth control pill (junel fe 1.5/30)? i take bc pill daily but had sex without condom (did not finish inside) 2 days after ovulation (had sex on day 16)

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Yes: Doxycycline can decrease effectiveness of ethinyl estradiol (contained in the Junel fe 1.5. 30).

Answered 6/7/2020

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