Click here to compare prices on tramadol >>>

It is a synthetic agent, as a 4-phenyl-piperidine analogue of codeine,[1][2] and appears to have actions on the GABAergic, noradrenergic and serotonergic systems

Tramadol was developed by the German pharmaceutical company Grünenthal GmbH and marketed under the trade name Tramal

Grünenthal has also cross licensed the drug to many other pharmaceutical companies that market it under various names, some of which are listed below

Tramadol is usually marketed as the hydrochloride salt (tramadol hydrochloride) and is available in both injectable (intravenous and/or intramuscular) and oral preparations (e

g

Zydol in UK and Australia, Ultram in U

S

, Zytrim in Spain and Canada, and Calmador in Argentina)

It is also available in conjunction with paracetamol (acetaminophen) as Ultracet or Tramacet