Background: Rocuronium, like succinylcholine, has a rapid onset of neuromuscular blockade; but, unlike succinylcholine, rocuronium does not have the deleterious effects that are associated with the use of the latter. Nevertheless, its usage is restricted because of its protracted activity. The purpose of this study was to determine whether or not lowering the intubating dose of rocuronium shortened its duration of action while still providing intubating conditions that were clinically acceptable. This was a prospective, randomised, and blinded study for both participants and observers.