Verapamil: a calcium-channel blocker.
D001145:Arrhythmias, Cardiac / Q000188:drug therapy*; D002118:Calcium / Q000378:metabolism; D002121:Calcium Channel Blockers / Q000627:therapeutic use*; D006329:Heart Conduction System / Q000502:physiology; D006801:Humans; D007473:Ion Channels / Q000502:physiology; D008991:Monitoring, Physiologic; D014700:Verapamil / Q000627:therapeutic use*
D002121:Calcium Channel Blockers; D007473:Ion Channels; D014700:Verapamil; D002118:Calcium