title: Misoprostol in the treatment of tinnitus: a double-blind study.
abstract: OBJECTIVE
  To test the efficacy of misoprostol as a treatment for tinnitus.
  
  
  METHODS
  A prospective, placebo-controlled, double-blind study.
  
  
  METHODS
  Başkent University Otolaryngology Clinic.
  
  
  METHODS
  Forty adult patients who had had tinnitus for a minimum of 6 months and were free of systemic or otolaryngologic disease. Twenty-eight patients were randomly assigned to the experimental group (group I) and 12 to the control group (group II).
  
  
  METHODS
  The respective groups received active drug and placebo in increasing doses for 4 months. The effect of medications on tinnitus were evaluated by determining improvement rates in tinnitus loudness and subjective tinnitus scoring.
  
  
  RESULTS
  In the experimental group, 18 of 28 patients showed improvement in tinnitus loudness, representing an improvement rate of 64%. The improvement rate based on subjective tinnitus scoring was 36% (10 of 28 patients). In the control group, the improvement rate for tinnitus loudness was 33% (n = 4), and the rate for subjective tinnitus scoring was 17% (n = 2). The difference between improvement rate for tinnitus loudness of the experimental group and control group was found to be statistically significant (P = 0.039), but difference between improvement rate based on subjective tinnitus scoring was insignificant (P = 0.119). When results in the experimental group were analyzed according to etiological factors, the improvement rate was highest in the sudden-onset subgroup (77%).
  
  
  CONCLUSIONS
  Misoprostol provided therapeutic relief for some patients with tinnitus we studied, but further investigation of larger groups is needed.
authors.affiliation: Department of Otolaryngology--Head and Neck Surgery, Başkent University School of Medicine, Ankara, Turkey.
authors.forename: Ismail
authors.initials: I
authors.lastname: Yilmaz
authors.forename: Babür
authors.initials: B
authors.lastname: Akkuzu
authors.forename: Ozcan
authors.initials: O
authors.lastname: Cakmak
authors.forename: Levent N
authors.initials: LN
authors.lastname: Ozlüoglu
mesh_terms: D000328:Adult; D000368:Aged; D004311:Double-Blind Method; D005260:Female; D006320:Hearing Tests; D006801:Humans; D008144:Loudness Perception; D008297:Male; D008875:Middle Aged; D016595:Misoprostol / Q000627:therapeutic use*; D018377:Neurotransmitter Agents / Q000627:therapeutic use*; D011446:Prospective Studies; D012720:Severity of Illness Index; D014012:Tinnitus / Q000188:drug therapy* / Q000209:etiology; D016896:Treatment Outcome; D014665:Vasodilator Agents / Q000627:therapeutic use*
chemical_list: D018377:Neurotransmitter Agents; D014665:Vasodilator Agents; D016595:Misoprostol