The flesh-eating drug Krokodil made its horrifying United States debut two weeks ago in Arizona, but as many feared, its use has spread: there have now been three reports of the drug in a Chicago suburb.

Krokodil, already a popular drug in Russia, has finally made its way to the United States. The Banner Poison Control Center in Arizona has reported two cases of the flesh-rotting drug’s use, believed to be the first in the US. The drug is a mixture of codeine and hydrocarbons like gasoline, paint thinner, or oil that is injected directly into veins. It’s named krokodil because once injected, it rots your skin from the inside out, causing an alligator skin-like appearance. It’s really, really gross. You probably want to avoid the YouTube videos.