Mcneil Ab

Jeffrey L Vaught

Robert B Raffa

This invention relates to compositions comprising a tramadol material selected from the group consisting of tramadol, its stereoisomers and its pharmaceutically acceptable salts and either codeine or oxycodone, and their use in treating pain. When the components, i.e., tramadol materials and either of codeine or oxycodone, of the composition are within certain ratios of pharmacological effects of the compositions are superaddditive (synergistic).

Composition comprising a tramadol material and any of codeine, oxycodone

This invention relates to a composition comprising a tramadol material and acetaminophen, and its use. As used herein tramadol refers to various forms of tramadol. The compositions are pharmacologically useful in treating pain and tussive conditions. The compositions are also subject to less opioid side-effects such as abuse liability, tolerance, constipation and respiratory depression. Furthermore, where the components of the compositions are within certain ratios the pharmacological effects of the compositions are superadditive (synergistic).

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Perkosie, PA, United States of America

Jeffrey L Vaught