Abstract
Concerns regarding the estrogen-related adverse effects with use of combination oral contraceptives (OCs) have led to a progressive reduction in the estrogen dose since their introduction in the 1960s. Prompting these concerns were the numerous epidemiological studies linking estrogen in OCs to breast cancer (1) and cardiovascular complications, including an increase in thromboembolic events and myocardial infarction (2). By the early 1990s, low-dose OCs containing 20–35 μg of ethinyl estradiol (EE) were the most commonly used formulations, and products with more than 50 μg of EE were no longer being marketed. Epidemiological studies reported improved safety profiles of these lower dose formulations (3–7) (Fig. 1).
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© 2006 Humana Press Inc., Totowa, NJ
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Shoupe, D. (2006). Oral Contraceptives. In: Shoupe, D., Kjos, S.L. (eds) The Handbook of Contraception. Current Clinical Practice. Humana Press. https://doi.org/10.1007/978-1-59745-150-5_3
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DOI: https://doi.org/10.1007/978-1-59745-150-5_3
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