New low-dose, extended-cycle pills with levonorgestrel and ethinyl estradiol: an evolutionary step in birth control
Anita NelsonHarbor-UCLA Hospital, Los Angeles Biomedical Research Institute, Los Angeles, CA, USAAim: To review milestones in development of oral contraceptive pills since their introduction in the US 50 years ago in order to better understand how a new formulation with low-dose estrogen in an exten...
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2010-05-01
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| Series: | International Journal of Women's Health |
| Online Access: | http://www.dovepress.com/new-low-dose-extended-cycle-pills-with-levonorgestrel-and-ethinyl-estr-a4355 |