That happened in Bulgaria.Why have I never heard of these drugs before (except heroin obviously)? I looked up Codterpin and it seems to be the same or similar to Codeine. Is it any different? Same for substitol which seems to be Morphine.
Glutehthimid looks like some kind of barbiturate. But where do you live that you can actually get something like that? Just curious. Barbiturates don't seem easy to come by, and I probably couldn't safely take them being on Klonopin.
Once, many years ago when my grandfather was alive (he was a doctor and lived to be 99) i was in his house and found a whole box of old medications he had and he had some Seconal/Reds. I know I couldn't probably have safely taken any cause of the possible Klonopin interaction, but I wish I'd at least taken one and saved it as an artifact. It seems to be pretty rare. Now he and my grandmother have passed so who knows what happened to it, but at that point it was around 2009 give or take, and I bet you it was from the 70s, maybe even the 60s.
As far as I remember the codeine in Codterpin was codeine purum while in the codeine tabs it was codeine phosphate (or something like that) but I remember it was different. It was funny because there was kids codeine tablets with smaller milligrams and they were sugar coated

Actually I have been always curious who found out about that legendary combo between codeine and glutethimid because we have tried mixing it with tardil or fenobarbytal instead but it was different effect. It was years of total opioid epidemy in Bulgaria between 1997-2001 when it was extremely easy to buy the pills from literary every pharmacy but then it became real addiction problem and they stopped giving them so most of us turned to heroin.
Substutol is 24h morphine release tablets, totally injectable , 200mg each and there was 120 mg as well. We had substitol programs in Bulgaria (I believe there is still) like a methadone program. But bupre is not well known at all there, at all.