Ondansetron
"They gave me Zolfren in the ER when I was very nauseous and it wouldn't cease.  It took two, but then I felt human again.  Since then since I have IBS and get nausea occasionally still, I use it and it stops it cold.  If I am highly nauseous it takes longer to work, and I have to take two Zolfren.  I was told they give this to babies and chemo patients and that aren't any side effects.  I salute this medication; for me it is a life saver."