America’s coke users are being warned that tainted drugs have killed three and sickened dozens more. According to the DEA, a third of cocaine seized is cut with levamisole, a livestock deworming drug that reportedly “elevates opiate levels in various brain regions,” producing a stronger high. However, it also weakens the immune system and decreases white blood cell counts, leaving the contaminated coke sniffers unable to fight off common infections like swine flu and rat-borne diseases. |NYT|