This book is a Monograph of honest research work and clinical study that carried out for the use of recent drugs in prevention and treatment of nausea & vomiting in the peri-operative period.This study also included the use of recent drugs like Palonosetron and Onadansetron during and after various surgical procedures .We have taken utmost care in titrating the dosage schedule which is in accordance with the standard reccomendations. Authors tried to preserve the upto date data while making this monograph.