Opiate is an EP by the American rock band Tool. Released in 1992, it followed some two years of playing together after their formation in 1990, and preceded their first full-length album, Undertow, by a year. It yielded two singles, "Hush" and "Opiate". It is named after a quote by Karl Marx: "Religion [...] is the opium of the masses." Opiate was certified platinum by the RIAA on April 1, 2005.