Can cocaine make your earlobes rot and fall off? Probably not, but a banned drug found to be mixed with about 83 percent of street cocaine can, and there are already cases of the nasty side effect occurring in avid coke users.

Cocaine is a powerfully addictive stimulant derived from the leaves of the coca plant. In order to meet the ever-increasing demands of the illegal drug trade, cocaine dealers often “cut” their product with other substances in order to increase their profit without actually having to use more goods. Gross Science reported that the most common products used to cut cocaine are cheap substances like flour and powdered caffeine, but Barbara Carreno, a DEA public affairs officer, recently told LiveScience that levamisole, a veterinary drug banned for human use, has been found in over three-quarters of cocaine seized in the U.S. in 2015.

Levamisole was first used to help treat worm infections in both humans and animals, but soon doctors realized although it did effectively treat worm infections, it also had the nasty habit of killing white blood cells and destroying human flesh. According to Gross Science, skin rotting was most often seen in patients' ears and, in extreme cases, would rot the entire lobe.

According to a report published in August of this year, the source of a 42-year-old woman’s mysterious open sores was revealed when a hair analysis showed she had high levels of levamisole in her system. Although the woman had never knowingly taken the drug adulterant, her cocaine addiction revealed how the drug found its way into her body.