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Mestranol/norethisterone
Combined oral contraceptive medication From Wikipedia, the free encyclopedia
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Mestranol/norethisterone (brand names Norethin, Noriday, Norinyl, Norquen, Ortho-Novum, others) is a combination of the estrogen Mestranol and the progestin norethisterone (norethindrone) which was introduced in 1963 and was the second combined oral contraceptive to be marketed, following mestranol/noretynodrel in 1960.[1] Although most mestranol-containing oral contraceptive formulations have been discontinued, the combination remains available today in the United States in a single formulation under the brand name Norinyl 1+50 28-Day.[2] It has largely been superseded by ethinylestradiol/norethisterone, which has been marketed under many of the same brand names.[3][4]
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