Definition: A semisynthetic alkylated ESTRADIOL with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in ORAL CONTRACEPTIVES.
ethinyl estradiol, levonorgestrel drug combination [ Gynatrol,Microgynon,Trikvilar,Triregol,aviane,ethinyl estradiol - levonorgestrel ] formulated with increasing dosages of levonorgestrel and ethinyl estradiol, respectively, as follows: 1-6 days 50 ug & 30 ug, 7-11 days 75 ug & 40 ug, and 12-21 days 125 ug & 30 ug