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Nelson AL. Extended-cycle oral contraceptive pills with 10 microg ethinyl estradiol pills in place of placebo pills. Womens Health (Lond). 2007;3(5):529-35doi: 10.2217/17455057.3.5.529.
Nelson, A. L. (2007). Extended-cycle oral contraceptive pills with 10 microg ethinyl estradiol pills in place of placebo pills. Women's health (London, England), 3(5), 529-35. https://doi.org/10.2217/17455057.3.5.529
Nelson, Anita L. "Extended-cycle oral contraceptive pills with 10 microg ethinyl estradiol pills in place of placebo pills." Women's health (London, England) vol. 3,5 (2007): 529-35. doi: https://doi.org/10.2217/17455057.3.5.529
Nelson AL. Extended-cycle oral contraceptive pills with 10 microg ethinyl estradiol pills in place of placebo pills. Womens Health (Lond). 2007 Sep;3(5):529-35. doi: 10.2217/17455057.3.5.529. PMID: 19804029.
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Womens Health (Lond). 2007 Sep;3(5):529-35. doi: 10.2217/17455057.3.5.529.

Extended-cycle oral contraceptive pills with 10 microg ethinyl estradiol pills in place of placebo pills.

Women's health (London, England)

Anita L Nelson

Affiliations

  1. Harbor-UCLA Medical Center, Torrance, CA, USA. [email protected].

PMID: 19804029 DOI: 10.2217/17455057.3.5.529

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 microg 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.

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