Abstract
The medetomidine is a alpha-2 agonist drug that produces sedation and analgesia accompanied of bradycardia, hypotension and, sometimes, second-degree atrioventricular block. Antimuscarinic drugs have been recommended to minimize the cardiovascular effects of alpha-2 agonists, which the hyoscine-N-butyl bromide has least effect of equine gastrointestinal tract. In this way, the purpose of …