The analgesic action of tramadol hydrochloride is due to equally dad or mum drug and also the M1 metabolite (seeCLINICAL PHARMACOLOGY, Pharmacodynamics). Tramadol is administered as being a racemate and both the [-] and [+] kinds of both equally tramadol and M1 are detected within the circulation. Tramadol is very well absorbed orally using an abso