title: Is it safe to use intravenous verapamil to treat a patient who is taking oral verapamil?
mesh_terms: D000284:Administration, Oral; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D013614:Tachycardia, Paroxysmal / Q000097:blood / Q000175:diagnosis / Q000188:drug therapy*; D014700:Verapamil / Q000008:administration & dosage* / Q000097:blood
chemical_list: D014700:Verapamil