Yeah, I always thought that the opioid RC's would be a way to get a huge supply of opioids in a relativley easy way. I thought that getting a dick-ton of a RC opioid would give me a lot of wiggle room to taper off my other opioids, because I'd have a "practically" unlimited supply so my taper could be low n' slow and comfortable and I wouldn't have to worry about running out of drugs randomly. Also relatively cheap and semi-quasi-legal sorta.
But EVERYTHING I've seen about these opioid RC's are really bad overdoses, and (almost) worse is what happens to the ones who don't overdose. You have an endless supply of a strong opioid, and end up being physically dependent on a dose that no one taking street drugs or pharmaceuticals could ever hope to achieve on even the largest of incomes. Taking a fent analogue and ending up being in W/D if you do any less than the equivalent of like $400 worth of street heroin per day or more. So bad that if you were to seek medical help the doctors would never be able to give you the ammount of methadone or suboxone you would need to even feel slightly less miserable than death.
When I went to the hospital for tianeptine and i was on the ~10g/day dose, the BSU sucked big time. The doctors didn't know what it was and had no idea how to treat the w/d. They really didnt want to use any coontrolled substances while treating me. Since it came up on wikipedia as a "novel anti-depressant" (yes, the nurses wikipedia'd it to find out what to do, great hospital), they started me on anti-psychotics. Risperdal first, then after that wasn't "working" they tried seroquel, got REALLY bad muscle side effects from it so I got a 7mg dose of ativan and changed to haloperidol. 20mg twice a day and 10mg valium 3x a day. The antipsychotics made me exhausted, walking to the medicine window 30 feet from my room winded me and I'd have to sit on the floor instead of standing at the window. when I got out I googled haloperidol, and found out that schitzophrenics get treated with 5mg 3x a day, and I was perscribed 20mg 2x a day for...............................what? My diagnosis was unclear and it was officially "drug withdrawal".
Taking weird online drugs is a bad bet. Tianeptine isn't even known, its a bonafide prescription drug in europe with patents and research. Other RC's would make you a big question mark floating around a hospital, and you're going to be very uncomfortable most of the time.