propoxyphene[3] is an analgesic in the opioid category, patented in 1955[4] and manufactured by Eli Lilly and Company. It is an optical isomer of levopropoxyphene. It is intended to treat mild pain... Read more »


Nalbuphine, sold under the brand names Nubain among others, is an opioid analgesic which is used in the treatment of pain.[4][7][5] It is given by injection into a vein, muscle, or fat.[4][5]... Read more »


Tramadol, sold under the brand name Ultram among others,[2] is an opioid pain medication used to treat moderate to moderately severe pain.[1] When taken by mouth in an immediate-release formulation, the onset... Read more »


Levorphanol (brand name Levo-Dromoran) is an opioid medication used to treat moderate to severe pain.[1][2][3] It is one of four enantiomers of the compound racemorphan. It was first described in Germany in... Read more »


Opium (poppy tears, with the scientific name: Lachryma papaveris) is the dried latex obtained from the opium poppy (scientific name: Papaver somniferum).[5] Approximately 12 percent of the opium latex is made up... Read more »


Infumorph Overview Infumorph is a prescription medication used to treats severe, chronic pain. It belongs to a group of drugs called opioid narcotics. These work by changing the way the brain and... Read more »


Levomethadone (INN; L-Polamidon, L-Polamivet, Levadone, Levothyl), or levamethadone, is a synthetic opioid analgesic and antitussive which is marketed in Europe and is used for pain management and in opioid maintenance therapy.[1][2][3] In... Read more »


Dextromethadone is the (S)-enantiomer of methadone. Dextromethadone acts as a N-methyl-D-aspartate NMDA receptor antagonist.[1] There is now an asymmetric synthesis[2] available to prepare both dextromethadone [S-(+)-methadone] and levomethadone [R-(−)-methadone].[3] Read more »


Methadone, sold under the brand name Dolophine among others, is an opioid used for opioid maintenance therapy in opioid dependence, and for pain.[3] Detoxification using methadone can either be done relatively rapidly... Read more »


This article is about the analgesic drug also sold under the trade name Dolantin. For the anticonvulsant sold under the trade name Dilantin, see phenytoin. Pethidine Pethidine2DACS.svg Pethidine-PM3-based-on-xtal-1974-3D-balls.png Clinical data Trade names... Read more »