Vecuronium inhibits both forms of the muscle-type acetylcholine receptor with IC50 of 1-2 mM. Vecuronium combined with methylprednisolone shows additive effects on both receptor forms, which is best described by a two-site model, with each site independent. ^[1] Vecuronium interferes with nicotinic processes in the carotid body and inhibits the chemoreceptor neural response to hypoxia. Vecuronium significantly attenuates the increase in CSNA (DeltaCSNA) in response to hypoxia in the carotid body