My 2 year old was vomitting for 3 days. We took him to the ER and they gave him an IV to help control dehydration. They sent us home with Zofran tablets and instructed us to dissolve 1/2 tablet under his tongue every 8 hours. Within 10 min of giving him this, he throws up... every time. Any suggestions on this? We are not giving him any other medication. He's drinking small amounts of water and not eating. I'm afraid we're going to be taking him back to the ER in a day or so again for an overnight stay.