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Oral contraceptives, abbreviated OCPs, also known as birth control pills, are medications taken by mouth for the purpose of birth control. == Female == Two types of female oral contraceptive pill, taken once per day, are widely available: * The combined oral contraceptive pill contains oestrogen and progesterone * The progestin-only pill Emergency contraception pills ("morning after pills") are taken at the time of intercourse, or within a few days afterwards. * Yuzpe regimen uses combined oral contraceptives * Ulipristal acetate is an antiprogestogen Other types of female oral contraceptive are experimental or only available in limited areas: * Mifepristone is an antiprogestogen which has been used as a daily oral contraceptive in investigational clinical trials * Ormeloxifene (also known as Centchroman) is a selective estrogen receptor modulator which is taken one to two times per week 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oral contraceptive pill」の詳細全文を読む スポンサード リンク
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