Pharmacokinetic differences between Caucasian and Japanese subjects after single and multiple doses of a potential combined oral contraceptive (Org 30659 and EE).

de Visser SJ, Uchida N, van Vliet-Daskalopoulou E, Fukazawa I, van Doorn MB, van den Heuvel MW, Machielsen CS, Uchida E, Cohen AF

To compare the pharmacokinetic parameters and safety of the progestagen, Org 30659, (17alpha)-17-hydroxy-11-methylene-19-norpregna-4,15-dien-20-yn-3-one), and ethinyl estradiol (EE) in Caucasian and Japanese women after single and multiple doses.