Ondansetron
nausea/vomiting
"Took this for nausea due to flue. It might have helped, I'm not sure, but I took it twelve hours ago and now I have worst headache of life and nothing gets rid of it. I can't move and I'm very dizzy. Also slightly nauseous. Phenergan would have been better. Also this stuff tastes gross and I almost puked trying to swallow it. Would not take this again."