<prompt> Which one of the following drugs has been shown to offer protection from gastric aspiration syndrome in a patient with symptoms of efflux -OndansetronMetoclopramideSodium citrateAtropine  <response>: Ans. is b i.e., Metoclopramide Metoclopramide offers protection from gastric aspiration syndrome in patients with reflux by enhancing the tone of LES and speeding gastric emptying. 