METHODS	A prospective randomized case controlled study was conducted at J. N. Medical College Hospital , Aligarh Muslim University , Aligarh , India , in patients who underwent lap chole following intravenous administration of ondansetron ( 4mg ) or ramosetron ( 0.3 mg ) at the end of surgery , and efficacy as well as side effects of ondansetron and ramosetron was documented and compared .\