METHOD OF CONTRACEPTION BY THE ADMINISTRATION OF STAGE-COMBINATION PREPARATIONS

摘要

Method of contraception in which an estrogen and a progestagen are orally administered daily for 21 days, the first 4-6 days at a low contraceptively effective daily dose, the next 4-6 days at a daily estrogen dose 1-2 times and a daily progestrogen dose 1-1.5 times that of the first 4-6 days, and for the next 9-11 days at a daily estrogen dose from that of the first 4-6 days to that of the next 4-6 days and a daily progestogen dose higher than either prior daily dose, up to 3 times that of the initial dose, followed by 7 days without hormone administration.