Flumexadol is a selective and affinity 5-HT2C receptor agonist with a Ki of 25 nM for the (+)-enantiomer of Flumexadol, and is 40-fold selective over the 5-HT2A receptor. Flumexadol is an orally active non-narcotic analgesic.
FK 33-824 ,with similar actions to those of methionine enkephalin(ENKEPHALIN, METHIONINE),is a stable synthetic analog of that. Its effects can be reversed by narcotic antagonists such as naloxone.