<unk>  is an opioid analgesic.<unk>  itself is a prodrug which is readily hydrolyzed in the gastrointestinal tract to its main metabolite, despropionyl-bezitramide.<unk>  was discovered at Janssen Pharmaceutica in 1961. It is most commonly marketed under the trade name Burgodin.
The drug was pulled from the shelves in the Netherlands in 2004 after fatal overdose cases, including one where a five-year-old child took one tablet from his mother's purse, ate it, and promptly died.<unk>  is regulated much the same as morphine in all known jurisdictions and is a Schedule II substance under the United States' Controlled Substances Act of 1970, with an ACSCN of 9800 and zero annual manufacturing quota. However, it has to this point never been marketed in the United States.
Bezitramide
Vigabatrin
Dirlotapide
Stiripentol
Piritramide
Metizoline
Azidomorphine
Tasimelteon