A solid, controlled release, pharmaceutical composition comprising an active ingredient incorporated in a matrix comprising a first substance selected from a water soluble polydextrose and a water soluble cyclodextrin and a second substance selected from a C.sub.12 -C.sub.36 fatty alcohol and a polyalkylene...http://www.google.com/patents/US4834985?utm_source=gb-gplus-sharePatent US4834985 - Controlled release pharmaceutical composition
