I was prescribed that stuff after surgery in 95 and it was little different than anything else I'd ever had...
Well said...I agree, butorphanol is in a league of its own. The best description I can give you is that is as close to a 'psychedelic opioid' as anything I've ever tried, and I've tried them all. The closest thing I could compare it to would be Talwin NX (pentazocine/naloxone tablets,) but that's not a very good comparison, to be honest. The only similarity is that both Talwin and Stadol are mixed agonist/antagonists or partial agonists - I don't remember, but it would be worth checking out.
I was prescribed the nasal spray, and I used the whole bottle over the course of one night. I should note that I had an exceedingly high tolerance to opiods, and always have. It was not very euphoric at all, and does not resemble oxycodone or any other pure-agonist opioid in my opinion. In fact, the more I used, the more dysphoric the experience became. As I attempted to drift off to sleep, I started having closed-eye visuals and hearing wierd music, voices and other random noises. I never could get to sleep. Other opioids can cause this phenomenon; it's known as 'Yen sleep.' I've experienced it from morphine and Hycodan syrup. It's not unpleasant, but butorphanol took it to a whole new level. I should add, it didn't cause noticeable respiratory depression or histamine release and the associated itching.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I just stumbled across this on WP when reading about Matrine, a K-opioid receptor agonist/research chem:
It has long been understood that κ-opioid receptor agonists are dysphoric but dysphoria from κ-opioid receptor agonists has been shown to differ between the sexes. More recent studies have shown the aversive properties in a variety of ways and the κ-opioid receptor has been strongly implicated as an integral neurochemical component of addiction and the remission thereof.
It is now widely accepted that κ-opioid receptor (partial) agonists have dissociative and deliriant effects, as exemplified by salvinorin A.
These effects are generally undesirable in medicinal drugs and could have had frightening or disturbing effects in the tested humans. It is thought that the hallucinogenic effects of drugs such as butorphanol, nalbuphine, and pentazocine serve to limit their opiate abuse potential.