Rimazolium is a non-narcotic

analgesic An analgesic drug, also called simply an analgesic (American English), analgaesic (British English), pain reliever, or painkiller, is any member of the group of drugs used to achieve relief from pain (that is, analgesia or pain management). It ...

. It is usually formulated as the mesylate salt, rimazolium metilsufate.

References

{{analgesic-stub Analgesics Quaternary ammonium compounds Ethyl esters