Opiate is an EP by American rock band Tool. It was produced and engineered by Sylvia Massy and former Minor Threat bassist Steve Hansgen. Released in 1992, it was the result of some two years of the band playing together after their formation in 1990. "Opiate" preceded Tool's first full-length album, Undertow, by a year. It is named after a quote by Karl Marx: "Religion [...] is the opium of the masses". The EP was certified platinum by the RIAA on April 1, 2005. As of July 7, 2010, Opiate has sold 1,155,000 Copies in the US.