title: Prevention of relapse in reflux esophagitis: a placebo controlled study of ranitidine 150 mg bid and 300 mg bid.
abstract: OBJECTIVE
  To compare the efficacy and safety of long term use of ranitidine 150 mg bid, 300 mg bid and placebo in prevention of endoscopic and symptomatic relapse of reflux esophagitis in an international, double-blind, placebo controlled, parallel group study.
  
  
  METHODS
  A total of 279 patients at least 18 years old from hospital out-patient departments with healed esophagitis (grade 0) with no or mild symptoms entered the study. Patients were randomly allocated to receive ranitidine 150 mg, 300 mg placebo twice daily for 48 weeks. Patients returned for symptom assessments at eight-week intervals and for re-endoscopy every 16 weeks.
  
  
  RESULTS
  Both ranitidine regimens were significantly more effective than placebo in preventing endoscopic and symptomatic relapse of reflux esphagitis (p = 0.003 for ranitidine 150 mg bid; P < 0.001 for ranitidine 300 mg bid). No statistically significant differences were observed in relapse rates between the two ranitidine regiments. The percentage of patients with endoscopic relapse (grade 2) after 48 weeks were 60%, 37% and 27% for placebo, ranitidine 150 mg bid and ranitidine 300 mg bid, respectively (P = 0.002 for ranitidine 150 mg bid versus placebo; P < 0.001 for ranitidine 300 mg bid versus placebo). Ranitidine was well tolerated.
  
  
  CONCLUSIONS
  Ranitidine 150 mg bid and 300 mg bid are safe and effective treatments in the prevention of reflux esophagitis relapse.
authors.affiliation: St. Vincent's Hospital, Dublin, Eire.
authors.forename: J H
authors.initials: JH
authors.lastname: Hegarty
authors.forename: L
authors.initials: L
authors.lastname: Halvorsen
authors.forename: B P
authors.initials: BP
authors.lastname: Hazenberg
authors.forename: A
authors.initials: A
authors.lastname: Nowak
authors.forename: C L
authors.initials: CL
authors.lastname: Smith
authors.forename: A B
authors.initials: AB
authors.lastname: Thomson
authors.forename: G
authors.initials: G
authors.lastname: Vantrappen
authors.forename: C J
authors.initials: CJ
authors.lastname: McKenna
authors.forename: J G
authors.initials: JG
authors.lastname: Mills
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D004942:Esophagitis, Peptic / Q000188:drug therapy* / Q000503:physiopathology / Q000517:prevention & control*; D004945:Esophagoscopy; D005260:Female; D006635:Histamine H2 Antagonists / Q000008:administration & dosage*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011899:Ranitidine / Q000008:administration & dosage*; D012008:Recurrence; D016896:Treatment Outcome
chemical_list: D006635:Histamine H2 Antagonists; D011899:Ranitidine