BACKGROUND: To assess symptom relief in patients with heartburn following treatment with esomeprazole 40 mg daily. METHODS: Patients with heartburn (for > or = 6 months) were assessed in this double-blind, multicenter study. After a 3-day single-blind placebo run-in, 440 patients were randomized to esomeprazole 40 mg o.d., esomeprazole 20 mg b.i.d. or placebo for 14 days. Heartburn symptoms were recorded daily; as insufficient patients had data available from days 13 and 14, analyses included data up to day 12. Gastroesophageal reflux disease (GERD) was diagnosed by upper GI endoscopy and 24-h pH-monitoring. The primary end-point was total heartburn relief defined as no heartburn symptoms during the preceding 24-h period. RESULTS: 240 patients had erosive esophagitis (EO) and 114 patients had GERD defined by pH-monitoring. Proportions of patients with total heartburn relief increased during the first days of treatment and stabilized after Day 4. Total heartburn relief occurred in 67%-73%, 62%-70%, and 21%-32% of patients in the esomeprazole 40 mg o.d., esomeprazole 20 mg b.i.d., and placebo groups, respectively, between days 6 and 12. Proportions of patients with total heartburn relief were higher in patients with EO (71%-80% of patients from Day 4 onwards) compared to those without EO (52%-67% of patients from Day 4 onwards). Figures for patients diagnosed by pH-monitoring were 65%-73% of those with a positive diagnosis and 51%-58% with a negative diagnosis. CONCLUSION: Esomeprazole 40 mg o.d. treatment produces total heartburn relief in a high proportion of patients with GERD. Once-daily esomeprazole 40 mg dosing is recommended as no advantage was gained by splitting the dose.
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Johnsson et al. (2003) studied this question.