Ketobemidone, sold under the brand name Ketogan (a mixture of ketobemidone and Spasmolytic A29) among others, is a powerful synthetic opioid painkiller. Its effectiveness against pain is in the same range as morphine, and it also has some NMDA-antagonist properties imparted, in part, by its metabolite norketobemidone. This may make it useful for some types of pain that do not respond well to other opioids. It is marketed in Denmark, Iceland, Norway. Until 2024 it was available in, but is now withdrawn in Sweden. It is used for severe pain.
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Ketobemidone, sold under the brand name Ketogan (a mixture of ketobemidone and Spasmolytic A29) among others, is a powerful synthetic opioid painkiller. Its effectiveness against pain is in the same range as morphine, and it also has some NMDA-antagonist properties imparted, in part, by its metabolite norketobemidone. This may make it useful for some types of pain that do not respond well to other opioids. It is marketed in Denmark, Iceland, Norway. Until 2024 it was available in, but is now withdrawn in Sweden. It is used for severe pain.
==History== Ketobemidone was first synthesized in 1942 by Eisleb and colleagues, at the laboratory of I.G. Farbenindustrie at Hoechst during the Second World War. The first study of it in humans was published in 1946, and it was introduced in clinical medicine shortly after. It was not in clinical use in the United States when the Controlled Substances Act 1970 was promulgated and was assigned to Schedule I with an ACSCN of 9628. As of 2013, no annual manufacturing quota was assigned by the DEA.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).