Ok, but this is not an opioid, and it has no known rebound effect. The compound had been on the market and in use in consumer products for more than 20 years.
That sounds like "famous last words". The fact that they don't know of the effects is probably because they carefully avoided looking for them.
I've tried cocaine; didn't like it. I use OTC codeine/paracetamol for pain; I don't need the paracetamol, but you can't buy straight codeine OTC in the UK, so I'm forced to buy a proprietary compound. I'm never tempted to take it if I don't need it.
So it probably sounds as if I'm the type who doesn't fall to addictions; but in fact I've been addicted to alcohol and nicotine for 40 years. I've tried repeatedly to quit both, and failed.
There's just one psychoactive drug I've used that is definitely not addictive: LSD. If you can bear to continue tripping for more than about 3 days, it stops working, no matter how high the dose, and you won't get re-sensitized until several weeks of abstinence.
