The horrific cocktail of codeine, gasoline, paint thinner and alcohol that is krokodil makes it a contender for one of the most frightening and dangerous drugs currently available on the black market.
Dubbed "cannibal heroin", it literally rots users from the inside out, in most cases leaving addicts with a life expectancy of just a year.
Pictured below is a krokodil user's mottled, sore-addled legs, followed by some of the other horror drug stories we've come across.
And we're not just talking about the harder stuff. Cannabis and magic mushrooms have also played parts in some of these unsavoury tales.
Just say no, kids.
Shockingly, the 'naked cannibal
' who bit off the face of a homeless drifter in Miami last year was high on cannabis and not, as was originally suspected, bath salts. Rudy Eugene
was shot dead at the scene, while his victim, Ronald Poppo
, continues to recover in hospital.
In the 1960s methamphetamine
was prescribed as a slimming aid and to counter narcolepsy. It is now a highly addictive illegal drug which can lead to the body's consumption of its own muscle tissue and facial fat. Acne and scarring can also occur, usually from obsessive picking related to the sensory hallucination of insects crawling under the user's skin.
British student Rachel Whitear died after a heroin overdose in 2000. A poster of her corpse was circulated, with the approval of her parents, in an attempt to shock children into not taking drugs.