If this is the first time one has taken a narcotic there is no way to be certain about the effect, especially in the absence of physical pain and/or distress - given that the effects of narcotics by themselves, even the strong ones like nicomorphine, dextromoramide, morphine, smack, dipipanone and so forth, are actually more subtle and centred on the physical body than a lot people expect, and the side effects of nausea, the potential for vomiting and so forth are still there. If one has a sufficiently sanguine and calm, i.e. "morphine-y" personality and takes codeine or the like, they may feel next to nothing if there is no distress present for it to solve, and all will happen is the beginning of jacking up tolerance. Alternatively, the case of such a person presents no legitimate medical excuse for not being given strong narcotics when they are in pain for a prolonged period as the subjective change that takes place on administration is most likely not going to be stark and noticeable enough to set up an intractable psychological habituation, much less the phobia about withdrawal which turns the purely metabolic condition of physical habituation into actual addiction. Tolerance is an unrelated matter which is usually basis for real fear depending on the economic/supply situation -- it even happens with antacids and ibuprofen . . .
This is why most even heading towards more complete involvement from any remotely recreational and early situational use of narcotics strictly by themselves is actually very uncommon and why iatrogenic addiction (as opposed to physical habituation) truly only happens, caeteris paribus, at low per myriad or single digits per 100 000 levels . . . most people who get themselves in trouble with narcotics find it as the most persistent of several drug habits or the second most after benzodiazepines after extended intensified or compulsive poly-drug use. Narcotics may not even do everything they have to therapeutically, hence the need for adjuncts, potentiators, and atypical analgesics In a lot of cases. Even after a root canal treatment or extraction, the narcotic needs something like naproxen with it to stop the swelling, and the right antihistamine makes it work 10 times better.
And there are people for whom, because of personality structure, they will have an atypical reaction to them like nothing but dysphoria, complete dissociation, or something like that. For example, there are many people who say that catabolic steroids like methylprednisolone and dexamethasone make them cranky, but for me, dexamethasone and betamethasone feel even better than Bolivian Marching Powder and last a good long time and mix just as well with narcotics. They are also self-limiting because they can be taken only so often. But a lot of the distress of the gout cranking up again is mitigated by the fact that it will take essentially a speedball of hydromorphone, hydromorphinol, or nicomorphine and dexamethasone to quell it, in the main line to begin with and then a slow sublingual taper over nine days. I did not press for details, but another catabolic steroid fancier once told me that when he sees a field of sisal (from which Dr Percy Lavon Julian Sr, the famous African American chemist, discovered cortisone can be extracted) that it makes his butt itch.
