I quit taking a painkiller about a month ago. Went through a long period of
withdrawal where I ate very little. I actually went from a very fit 200lbs (6ft4) to around 175-180 over the span of 3 weeks. During that time I was taking a variety of medicines to help with the withdrawal, Klonopin, Simply Sleep, Adderall, Clonodine, Immodium, Advil, Pepto Bismol, Bentyl, and Tigan at various points depending on the symptom.
I got a physical at about 31 days since I quit.