It sounds like a direct-to-Netflix horror movie plot -- a cheap, addictive drug available in a foreign land, that turns the user's skin a scaly green colour. Soon it rots the flesh, causing the user's skin to emulate that of a crocodile, leaving bone and muscle tissue exposed to the world. But the Russian drug known as krokodil is real.

Warning: Disturbing images of the effects of Krokodil below. This article may be shocking or upsetting for some people. Proceed with caution.