nausea/vomiting
"I had gall bladder surgery and got narcotics for pain afterwards. No matter what pain killer I got, they made me vomit even at half the dose. Ondansetron (Zofran) helped some but not fully. Once I got my first dose of Phenergan my nausea was completely gone. It made me very sleepy but I was very happy about. This was the best anti-nausea medication that I ever had!"