Preferred Label : Ethinyl Estradiol/Norgestrel;
Obsolete resource : true;
NCIt synonyms : Ethinyl-Estradiol Norgestrel;
NCIt definition : A combination of two steroid sex hormones, the semisynthetic estrogen ethinyl estradiol
and the synthetic progestogen norgestrel, with contraceptive activity. The combination
of ethinyl estradiol with norgestrel suppresses the hypothalamic-pituitary system,
leading to an inhibition of the release of follicle stimulating hormone (FSH), thus
suppressing the development of ovarian follicles. The release of luteinizing hormone
(LH) is also inhibited, thus preventing ovulation. In addition, thickening of the
cervical mucus and the endometrium is promoted, thereby altering the endometrium in
such a way as to discourage implantation.;
Concept status : Obsolete_Concept;
Drug name : Ogestrel; Ovral; Cryselle;
Origin ID : C12162;
UMLS CUI : C0717763; C0721402;
False automatic mappings
- Semantic type(s)
- chemotherapy_regimen_has_component
