No blue meth?
I’ve never heard of Krokodil.
It was an old Soviet humor magazine: Крокодил
"After the dissolution of the Soviet Union, the magazine was discontinued. It was reinstated in 2005 in Russia, issued monthly, headquartered in Moscow, and with editor-in-chief Sergei Mostovshchikov. The reinstated version is deliberately printed on old Soviet-style paper."
More recently, it has become the street moniker of Desomorphine, a nasty derivative of morphine, which is working to prove out Darwin's theory of natural selection among the two-legged critters.
About a year ago I saw an article on this stuff, it comes out of Russia I think. They made it sound like the absolute worst. It does more damage to the human body than anything. They showed addicts with their jaws just gone, still using (until they inevitably just die).