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      Esomeprazole 20 mg maintains symptom control in endoscopy-negative gastro-oesophageal reflux disease: a controlled trial of 'on-demand' therapy for 6 months.

      Alimentary Pharmacology & Therapeutics

      Administration, Oral, Adult, Aged, Anti-Ulcer Agents, administration & dosage, pharmacology, Double-Blind Method, Drug Administration Schedule, Endoscopy, Esomeprazole, Female, Gastroesophageal Reflux, drug therapy, pathology, Humans, Male, Middle Aged, Omeprazole, chemistry, Patient Satisfaction, Proton Pump Inhibitors, Stereoisomerism, Treatment Outcome

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          Most patients with gastro-oesophageal reflux disease (GERD), regardless of endoscopic status, suffer symptomatic relapse within 6 months of stopping acid suppressant therapy. To assess the efficacy of 'on-demand' treatment of GERD with esomeprazole, the first proton pump inhibitor developed as an optical isomer. In this multicentre, double-blind study, 342 endoscopy-negative GERD patients demonstrating complete resolution of heartburn during the final week of a 4-week treatment period with esomeprazole 20 mg or omeprazole 20 mg once daily were randomized to receive esomeprazole 20 mg or placebo on demand (maximum of one dose per day) for a further 6 months. Use of rescue antacids was permitted. All 342 patients (191 males), aged 19-79 (mean 49) years, were evaluable in the intention-to-treat analysis. The proportion of patients who discontinued treatment due to insufficient control of heartburn was significantly higher among placebo compared to esomeprazole recipients (51% vs. 14%; P < 0.0001). Patients randomized to esomeprazole on-demand therapy remained in the study longer than those in the placebo group (mean 165 vs. 119 days). Over 50% took the study medication for periods of 1--3 consecutive days (esomeprazole) or 4--13 consecutive days (placebo). Use of antacids was > 2-fold higher among placebo recipients. The frequency of adverse events was similar in the two groups, when adjusted for time spent in the study, as were the clinical laboratory profiles. On-demand therapy with esomeprazole 20 mg is effective and well tolerated in maintaining symptom control in endoscopy-negative GERD.

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