Yeah liquid steroid solution on blotter paper. Like LSD. DEA was involved and he was extradited from Thailand I think. Serious business these paper anabolics

I don't know how they got them into prisons, you'd see it was no ordinary paper if letter was opened by staff. Never saw them myself, I was all in on Russian Akrihin Dbol, enough for me.
Have to be careful with any low dose black market products like clen, thyroid. I think that Czech steroid testing guy Janoshik said he analyzed one batch of clen that was 2mg per tab, 2000 times the supposed amount. Probably wouldn't be deadly in most cases as .6mg has been trialed in heart failure patients but very uncomfortable for sure and may push someone over the limit. A 10mg Xanax is no big deal from an overdose standpoint but you still don't want that, might be bad if doing risky things, like operating machinery.
Ok, I found it. His name was Redicat. From AI :
What Happened to Redicat
Redicat's operation largely vanished from the underground market after his proprietary method was exposed and compromised.
He shared his exact preparation methods and provided physical product samples to a couple of prominent underground steroid authors. However, those authors quickly turned around and published high-resolution photographs of Redicat’s paper anabolics, alongside step-by-step instructions on how to manufacture them.
The Aftermath of the Exposure
• Market Flooding: Once the instructions became public, the novelty of Redicat's operation was ruined. Numerous moderators from various bodybuilding forums began replicating his technique to create their own inferior, generic brands of paper steroids.
• Increased Scrutiny: Because the method was openly detailed in underground literature, law enforcement and customs agencies quickly learned what to look for, effectively killing the stealth advantage that made paper-infused steroids viable in the first place.
Yeah, 10mg of xanax might be ok, but remember some people were used to 5mg. So when they were drawing up what they thought was 5mg, it was really 50mg. They didn't have many happy times.