title: Double-blind study of levamisole in aphthous stomatitis.
abstract: Sixty-five patients with recurrent aphthous stomatitis participated in a double-blind study to evaluate levamisole. Nineteen of 34 patients improved on levamisole and only five of 31 patients improved on placebo (P less than 0.004, chi-square with two degrees of freedom). After breaking the code and switching placebo patients to levamisole and non-responders to an alternate dosage schedule, 46 of 60 patients noted clinical improvement.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D007978:Levamisole / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D010919:Placebos; D012008:Recurrence; D013281:Stomatitis, Aphthous / Q000188:drug therapy*
chemical_list: D010919:Placebos; D007978:Levamisole