Patent Number: 6,254,887

Title: Controlled release tramadol

Abstract: A controlled release preparation for oral administration contains tramadol, or a pharmaceutically acceptable salt thereof, as active ingredient.

Inventors: Miller; Ronald Brown (Basel, CH), Leslie; Stewart Thomas (Cambridge, GB), Malkowska; Sandra Therese Antoinette (Cambridgeshire, GB), Smith; Kevin John (Cambridge, GB), Wimmer; Walter (Limburg, DE), Winkler; Horst (Linter, DE), Hahn; Udo (Nentershausen, DE), Prater; Derek Allan (Cambridge, GB)

Assignee: Euro-Celtique S.A.

International Classification: A61K 31/135 (20060101); A61K 9/20 (20060101); A61K 9/16 (20060101); A61K 9/28 (20060101); A61K 31/137 (20060101); A61K 31/485 (20060101); A61K 009/22 ()

Expiration Date: 07/03/2018