A long-lasting antagonist of nAChRs (IC50 = 1.8 μM) and ganglion blocker; decreases nicotine-induced dopamine release in rat striatal synaptosomes at concentrations ranging from 0-100 μM; a dose of 10 mg/kg blocks nicotine-induced stimulant activity for at least five weeks; prevents acquisition of conditioned taste aversion in rats when used at a dose of 5 μg, i.c.v.; inhibits autonomic ganglia when used at a dose of 50 mg/kg in cats