title: Investigations of pharmacokinetics of levonorgestrel to specific consideration of a possible first-pass effect in women.
mesh_terms: D000284:Administration, Oral; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D007700:Kinetics; D009644:Norgestrel / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D009644:Norgestrel