abstract |
The present invention relates to 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 a compound of formula (I) Quinoxaline-type piperidine compound of formula (II) to an animal in need thereof, in the manufacture of a medicament for the treatment or prevention of conditions such as pain. |