Promethazine
"Although I prefer Zofran melt aways because it melts in your mouth and doesn't require you to drink anything (which can cause vomiting when your already sick) I love Phenergan! It works longer and although not as fast it works better. I use it for nausea and as a sleep aid because of side effects from other medications. It does lower your blood pressure which is a side effect I don't mind because of my constant high BP and the side effects of the BP meds.it's very effective and almost every insurance will cover the cost (zophran is rarely covered) overall I don't take it everyday but it's safe for me to say that I've had no bad side effects from prolonged use."