Hi everyone just a quick question. I got wisdom teeth out and got vicodin prescribed. So before going to pick up the pescription i found my other vicodin pescription which was about 2 years and 5 months expired. Well anyway after a couple hours i vomited yellow color and it tasted sour and i got a rash on my face. It is still there after a couple days. So my question is why did this happen? was it because the pescription was old or just a bad reaction to vicodin? :(