PARACHLOROPHENYLALANINE By Nugent, Pam M.S. - April 7, 2013 noun. a compound which inhibits the synthesis of serotonin from tryptophan, generating an elimination of serotonin from brain cells. PARACHLOROPHENYLALANINE: "Parachlorophenylalanine has been experimented with in regards to its effects as an SSRI, but it not approved as one at this point in time." Related Psychology Terms TRYPTOPHAN HYDROXYLASE TRYPTOPHAN TIANEPTINE AMINE NEFAZODONE SEROTONIN ACULALIA DIHYDROINDOLONE SEROTONIN-RECEPTOR AGONISTS CURARE Cite this page: Nugent, Pam M.S., "PARACHLOROPHENYLALANINE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/parachlorophenylalanine/ (accessed November 17, 2017).