Postoperative nausea and vomiting (PONV) are among some of the most common adverse effects after surgery. Laparoscopic surgery is the second most common cause of PONV. The reported prevalence of PONV after gynecologic laparoscopic surgery is approximately 80%. 1 5-hydroxytraptamine 3 (5-HT 3 ) receptor antagonists are used to reduce the frequency of PONV. They are effective in preventing and treating PONV and have fewer adverse effects than other types of antiemetics. 2 Ramosetron, a 5-HT 3 receptor antagonist, is more effective than other 5-HT 3 receptor antagonists, has a higher affinity for the receptor, and exhibits a longer duration of action compared with previously developed antagonists. 3,4 However,