After being informed about the study, all patients who provide written informed consent and meet the eligibility requirements will be randomized in a triple-blind manner (participant, evaluator, and investigator) in a 1:1 ratio to Aprepitant (80 or 125 mg) + standard antiemetic regimen (once two hours before surgery) or placebo + standard antiemetic regimen(once two hours before surgery).~The standard antiemetic regimen will be Ondansetron 8 mg + Metoclopramide 10 mg + Dexamethasone 8 mg
The purpose of this study is to assess the efficacy of Aprepitant + standard antiemetic regimen in reducing postoperative nausea and vomiting after laparoscopic gastric sleeve versus placebo + standard antiemetic regimen