To say someone will take codeine to get high because Tylenol works just as well is an asinine statement. If that is true why would I have given my patient tonight 2mg IV Dilaudid if Tylenol would do the same thing.
The point I was making is the people who use their prescription drugs for minor things like a tension headache or toothache. As it seems you are a medical professional, you have obviously seen many patients who constantly ask for painkillers or keep pushing that morphine button until the are locked out.