Getting my 2yr to take meds


I have a 2yr old son who doesn't get sick often. Found out yesterday that he has an ear infection and the nurse who gave him his medicine was really rough. She held him down and force the medicine in his mouth which made him puke and choke. I told her I could do it but she told me she had to be sure he got the full dose. Now my baby is terrified to take the medicine at home. He freaks out every time. I need advice on how to get him to take it because he really needs it.