title: Digoxin plasma concentrations and nifedipine.
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D004077:Digoxin / Q000097:blood*; D004311:Double-Blind Method; D004347:Drug Interactions; D006801:Humans; D008875:Middle Aged; D009543:Nifedipine / Q000494:pharmacology*; D011725:Pyridines / Q000494:pharmacology*; D011897:Random Allocation; D014700:Verapamil / Q000494:pharmacology
chemical_list: D011725:Pyridines; D004077:Digoxin; D014700:Verapamil; D009543:Nifedipine