title: Oral contraceptives according to the normophasic principle.
abstract: A trial of a normophasic-principle oral contraceptive ethinylestradiol (Ovanon) is reported. In 130 women observed for a total of 1354 cycles, there were no pregnancies; good cycle control was attained; side-effects were rare, and there was a very high degree of acceptability.
mesh_terms: D000328:Adult; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage*; D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008234:Lynestrenol / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology*; D008598:Menstruation / Q000187:drug effects; D010352:Patient Dropouts
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D004997:Ethinyl Estradiol; D008234:Lynestrenol