Midterm review - Harvard University

Once vomiting has been relieved with parenteral anti-emetics, it is often possible to revert to the oral route. It may be wise to convert in stages, e.g. first change the anti-emetic, and then, the next day, change the morphine if there is no recurrence of vomiting. Is it necessary to give more morphine by mouth than by injection? Yes. ................
................