Affiliation:
1. Harbor-UCLA Medical Center, Torrance, CA, USA, Tel.: +1 310 222 3871; Fax: +1 310 782 2924;
Abstract
The elimination of monthly withdrawal bleeding with use of extended-cycle (84 pills) monophasic birth-control pills has modernized oral contraceptives. The use of ethinyl estradiol 10 μg pills in place of the seven placebo pills addresses the problems posed by 21/7 formulations of low-dose birth-control pills, which allow early stimulation of ovarian follicles, and of the early 84/7 formulations, which had higher rates of unscheduled bleeding and spotting.
Cited by
3 articles.
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