Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Wasu magunguna suna rage tasirin kwayar kuma suna iya haifar da zub da jini, ko kuma kara damar samun ciki. Wadannan sun hada da kwayoyi kamar rifampicin, barbiturates, phenytoin da carbamazepine. Bugu da kari an bayar da gargadi game da magungunan rigakafi masu yawa, kamar ampicillin da doxycycline, wanda zai iya haifar da matsaloli "ta hanyar lalata kwayoyin halittar da ke da alhakin sake amfani da ethinylestradiol daga babban hanji" (BNF 2003). An kuma hada da maganin gargajiya na gargajiya na St John's Wort saboda haɓakar tsarin P450 a cikin hanta.  Tambaya: me ke rage tasirin
Wasu kwayoyi