At the beginning of the 19th century, opium was widely used as an everyday remedy for common ailments. By the 1920s, it was classified as a "dangerous drug". In an examination of the social context of drug taking in Victorian England, the book explains this decisive change in attitude. This revised edition examines how and why restrictive policies were put in place in the early decades of the 20th century and reveals fresh perspectives on the motivations which survive in the formation of current drug policies.