Peripheral plasma levels of d-norgestrel in women after oral administration of d-norgestrel and when using intravaginal rings impregnated with dl-norgestrel.
D000284:Administration, Oral; D000287:Administration, Topical; D000328:Adult; D003274:Contraceptive Devices, Female; D003692:Delayed-Action Preparations; D004958:Estradiol / Q000097:blood; D005260:Female; D006801:Humans; D009644:Norgestrel / Q000008:administration & dosage / Q000097:blood* / Q000494:pharmacology; D011374:Progesterone / Q000097:blood; D014621:Vagina / Q000187:drug effects
D003692:Delayed-Action Preparations; D009644:Norgestrel; D011374:Progesterone; D004958:Estradiol