D-norgestrel: an estrogen-free, cyclic oral contraceptive.
D000568:Amenorrhea / Q000139:chemically induced; D005260:Female; D006801:Humans; D008599:Menstruation Disturbances / Q000139:chemically induced; D009644:Norgestrel / Q000009:adverse effects / Q000494:pharmacology*; D010060:Ovulation / Q000187:drug effects
D009644:Norgestrel