GUANFACINE By N., Pam M.S. - May 11, 2013 the name of a drug that is used to treat hypertension. Acts as a antagonist at alpha adrenoreceptors and restricts flow of impulses in the peripheral sympathetic nervous system. GUANFACINE: "Guanfacine is used to treat high blood pressure." Related Psychology Terms SYMPATHOMIMETIC DRUGS AUTONOMIC GANGLIA AUTONOMIC HYPERACTIVITY B FIBER CALCIUM-CHANNEL BLOCKCRS BRAIN TUMOR METHYLDOPA BIOFEEDBACK TRAINING YOHIMBINE BETA ADRENORECEPTOR Cite this page: N., Pam M.S., "GUANFACINE," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/guanfacine/ (accessed April 3, 2020).