Ondansetron
"This is a fantastic medication. I was admitted to the hospital for nausea/vomiting due to the flu. Hadn't eaten a thing in 5 days. They gave me Zofran 4mg at the hospital, my nausea and urge to vomit went away in about an hour, and my appetite came back later that night. I continued to take 4mg as per required, generally before I ate to make sure it didn't come back up. Was able to come off it without any adverse effects. I highly recommend this medication! A potential life saver."