Mode of action of verapamil.
D000109:Acetylcholine / Q000494:pharmacology; D006329:Heart Conduction System / Q000294:innervation; D006352:Heart Ventricles / Q000294:innervation; D006801:Humans; D014630:Vagus Nerve / Q000502:physiology; D014700:Verapamil / Q000494:pharmacology*
D014700:Verapamil; D000109:Acetylcholine