On-demand therapy with pantoprazole 20 mg as effective long-term management of reflux disease in patients with mild GERD: the ORION trial

Digestion. 2005;72(2-3):76-85. doi: 10.1159/000087661. Epub 2005 Aug 19.

Abstract

Aims: To compare safety and efficacy of on-demand pantoprazole 20 mg/40 mg versus placebo in the long-term management of patients with mild gastroesophageal reflux disease (GERD) after heartburn relief.

Methods: A total of 634 patients with endoscopically confirmed GERD grade 0/I and heartburn were included. During the acute phase, patients were treated with pantoprazole 20 mg once daily for 4 weeks. Those patients relieved from heartburn entered the long-term phase, and were randomly assigned to either treatment group pantoprazole 20 mg, 40 mg or placebo. Over 6 months, patients took study medication on demand (antacids as rescue medication) and discontinued the drug once symptoms abated.

Results: After 4 weeks a total of 87.1%/90.0% of patients were free of heartburn (ITT/PP), and entered the subsequent long-term phase. The perceived average daily symptom load (placebo: 3.93, pantoprazole 20 mg: 2.91, pantoprazole 40 mg: 2.71, ITT) and the number of antacid tablets taken (average number, placebo: 0.68, pantoprazole 20 mg: 0.45, pantoprazole 40 mg: 0.33, ITT) were significantly higher in the placebo than in both pantoprazole groups (p<0.0001), with no statistically significant difference between the two pantoprazole groups. The discontinuation rate due to insufficient control of heartburn was significantly lower in both pantoprazole groups compared to placebo (placebo: 10.9, pantoprazole 20 mg: 2.8, pantoprazole 40 mg: 0.9, ITT).

Conclusions: Our findings favor on-demand treatment with pantoprazole 20 mg for the long-term management of heartburn in patients with uncomplicated GERD (grade 0/I) with superiority to placebo.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 2-Pyridinylmethylsulfinylbenzimidazoles
  • Antacids / therapeutic use
  • Anti-Ulcer Agents / administration & dosage
  • Anti-Ulcer Agents / therapeutic use*
  • Benzimidazoles / administration & dosage
  • Benzimidazoles / therapeutic use*
  • Female
  • Gastroesophageal Reflux / drug therapy*
  • Humans
  • Male
  • Middle Aged
  • Omeprazole / administration & dosage
  • Omeprazole / analogs & derivatives*
  • Omeprazole / therapeutic use
  • Pantoprazole
  • Statistics, Nonparametric
  • Sulfoxides / administration & dosage
  • Sulfoxides / therapeutic use*
  • Treatment Outcome

Substances

  • 2-Pyridinylmethylsulfinylbenzimidazoles
  • Antacids
  • Anti-Ulcer Agents
  • Benzimidazoles
  • Sulfoxides
  • Pantoprazole
  • Omeprazole