Tramadol is a synthetic opiate-like pain-killer.
It is used as a substitute for codeine (and sometimes, morphine) in patients that cannot use these drugs, or are resistent to them.
Tramadol has a lower addiction risk compared to opiates, and a safer side-effect profile.
It has been used extensively in Europe, and is widely used in WA.
If you'd like to know more, do a web search on tramadol, or PM me.
RD.