Omeprazole improves peak expiratory flow rate and quality of life in asthmatics with gastroesophageal reflux

Am J Gastroenterol. 1998 Jul;93(7):1060-3. doi: 10.1111/j.1572-0241.1998.329_q.x.


Objective: The aim of this study was to determine if omeprazole improves pulmonary function and quality of life in asthmatics with gastroesophageal reflux.

Methods: This was a double blind, randomized, placebo-controlled cross-over trial. After a 4-wk lead-in period, nine patients with documented asthma and gastroesophageal reflux, were prescribed either omeprazole 20 mg, daily or placebo for 8 wk and then crossed over to the alternate treatment. Outcome measurements included: forced expiratory volume at 1 s (FEV1), peak expiratory flow rate (PEFR), and responses on the Asthma Quality of Life Questionnaire, a validated disease specific measure of functional status.

Results: After omeprazole treatment, compared with placebo, patients had higher mean morning and evening PEFR, mean absolute difference (95% CI): morning: 37.8 L/min. (10.9-64.6), evening: 31.2 (3.2-59.2). Omeprazole treatment led to higher mean overall scores on the Asthma Quality of Life Questionnaire, and on the subdomains of activity limitation, symptoms, and emotions (p = 0.039, 0.049, 0.024, 0.040). A trend toward higher FEV1 (mean: 15.6% difference) with omeprazole failed to reach statistical significance (p > 0.2).

Conclusions: After taking omeprazole for 8 wk, asthmatics with GER have better PEFR and quality of life than after placebo.

Publication types

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

MeSH terms

  • Activities of Daily Living
  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Anti-Ulcer Agents / administration & dosage
  • Anti-Ulcer Agents / therapeutic use*
  • Asthma / complications
  • Asthma / physiopathology*
  • Asthma / psychology
  • Circadian Rhythm
  • Cross-Over Studies
  • Double-Blind Method
  • Emotions
  • Female
  • Forced Expiratory Volume / drug effects
  • Gastroesophageal Reflux / complications
  • Gastroesophageal Reflux / drug therapy*
  • Health Status
  • Humans
  • Male
  • Middle Aged
  • Omeprazole / administration & dosage
  • Omeprazole / therapeutic use*
  • Peak Expiratory Flow Rate / drug effects*
  • Placebos
  • Quality of Life*
  • Reproducibility of Results
  • Treatment Outcome


  • Anti-Ulcer Agents
  • Placebos
  • Omeprazole