title: Double-blind trial comparing guanfacine and methyldopa in patients with essential hypertension.
mesh_terms: D000959:Antihypertensive Agents / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D016316:Guanfacine; D006146:Guanidines / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D008750:Methyldopa / Q000009:adverse effects / Q000627:therapeutic use*; D009638:Norepinephrine / Q000097:blood; D010648:Phenylacetates / Q000009:adverse effects / Q000627:therapeutic use*; D013375:Substance Withdrawal Syndrome / Q000209:etiology
chemical_list: D000959:Antihypertensive Agents; D006146:Guanidines; D010648:Phenylacetates; D016316:Guanfacine; D008750:Methyldopa; D009638:Norepinephrine