abstract |
The present invention provides a composition comprising a substituted-quinoxaline-type piperidine compound of formula (I) or formula (II), an effective amount of a substituted-quinoxaline-type piperidine compound, and an effective amount of formula (I) or formula A method of treating or preventing a pain-like condition comprising administering a substituted-quinoxaline-type piperidine compound of (II) to an animal in need thereof. |