levopropoxyphene
noun
le·vo·pro·poxy·phene
| \ ˌlē-və-ˌprō-ˈpäk-si-ˌfēn
\
\
Medical Definition of levopropoxyphene
: a drug used especially in the form of its napsylate C22H29NO2·C10H8SO3 as an antitussive