Metoclopramide and prochlorperazine do not decrease propofol hypnotic requirements.

One hundred patients scheduled for minor surgery were given either saline, metoclopramide 0.1 mg.kg-1 or 0.2 mg.kg-1, or prochlorperazine 0.1 mg.kg-1 or 0.2 mg.kg-1 before induction of anaesthesia with a fixed rate infusion of propofol. Neither metoclopramide nor prochlorperazine reduced the induction dose of propofol. The possibility that these agents increased the induction dose could not be excluded.