title: Verapamil and norverapamil plasma concentrations during long-term therapy in patients with hypertrophic obstructive cardiomyopathy.
mesh_terms: D000328:Adult; D001711:Biotransformation; D002312:Cardiomyopathy, Hypertrophic / Q000097:blood / Q000188:drug therapy*; D003692:Delayed-Action Preparations; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014700:Verapamil / Q000097:blood* / Q000627:therapeutic use
chemical_list: D003692:Delayed-Action Preparations; D014700:Verapamil