A slow-release suppository is provided. The slow-release suppository comprises a linear polymer, water and a therapeutically active ingredient. In particular, in accordance with the present invention, the linear polymer can be a polyvinyl alcohol, a polyvinyl pyrrolidone, a polyacrylamide, a chemically...http://www.google.se/patents/US4406883?utm_source=gb-gplus-sharePatent US4406883 - Controlled release suppositories consisting essentially of a linear polymer particularly, polyvinyl pyrrolidones
