I've had one patient, and I'll never forget this guy or his name, would come in over, and over, and over again, wanting tramadol. He'd ask for it by name and would turn down anything else, even "real" narcs. It was so weird, I actually remember the guys name, to this day. He wanted tramadol all the time. I made the assumption that there was no way he could be a seeker since he never wanted anything stronger than tramadol. Well...he disappears and I don't seem him for a long time. Fast forward 2 or 3 years, he shows up again and it turns out he's a heroin addict now on methadone. Whether or not he started on tramadol and worked his way up the ladder or was always a heroin addict and it staved off withdrawal somewhat for him I don't know. Bizarre. Other than this one guy, I've never had anyone else show an inappropriate desire for tramadol (sorry, drug company)