Krokodil is the worst drug in the world. Worse than cocaine, worse than heroin, worse than meth, worse than acid. It even makes crack look appealing, and that’s insane.
Krokodil’s origins are amongst Russia’s poorest communities where it arose as a cheap alternative to heroin.  The substance can be concocted by crushing codeine tablets, which are widely available, and mixing them with substances like petrol, red phosphorous and hydrochloric acid. Sound dangerous? Doctors estimate that from the point an addict first takes krokodil, their life expectancy is a little over two years.
According to people who have taken it, The drug has approximately the same effects, the same high, as heroin, but for as little as a tenth of the price of the real thing. The drug is named after crocodiles because of the scaly appearance gangrenous skin takes on.