I guess it could be something in the solution not agreeing with you? Is it like liquid morphine meant for IV? or is it given to you the same way you would receive liquid methadone or codeine syrup, IE meant for oral consumption? I mean if you were able to take morphine IRs in pill form along with all of those other opioids and didn't have any problems, then I would have to think it had something to do with it being in a liquid solution. Or maybe you caught a stomach virus or a touch of food poisoning, depending on what you ate? How long were you vomiting for?