title: Effect of intravenous esomeprazole 40 mg and pantoprazole 40 mg on intragastric pH in healthy subjects. A prospective, open, randomised, two-way cross-over comparative study.
abstract: OBJECTIVE
  The aim of this study was to compare the effect on intragastric acidity over 24 h on days 1 and 3 following treatment with intravenous (i.v.) esomeprazole 40 mg (CAS for esomeprazole sodium: 161796-78-7) and pantoprazole 40 mg (CAS for pantoprazole sodium: 138786-67-1).
  
  
  METHODS
  In an open, randomised, two-way cross-over study, 36 healthy volunteers received esomeprazole (Nexium) 40 mg or pantoprazole 40 mg, both administered once daily as an i.v. bolus injection for 3 consecutive days. Continuous 24-h pH recordings were made under standardised conditions at baseline and on days 1 and 3 of each treatment period. The primary variable was the percentage of time with intragastric pH > 4 during a 24-h period.
  
  
  RESULTS
  Time with intragastric pH > 4 was significantly greater with esomeprazole than with pantoprazole during the first 4 h (47.8% vs. 18.9%), as well as for the 24-h period of day 1 and day 3 (day 1: 38.8% vs. 23.7%; day 3:55.0% vs. 35.2%, p < 0.0001 for all times examined). Mean of median intragastric pH with esomeprazole was significantly higher than with pantoprazole during the 24-h period (day 1:3.2 vs. 2.2, p < 0.0001; day 3: 4.3 vs. 3.1, p < 0.00001).
  
  
  CONCLUSIONS
  Esomeprazole administered as a 40 mg i.v. bolus injection provided faster and more effective control of intragastric acidity than a 40 mg i.v. bolus injection of pantoprazole, and also maintained pH > 4 longer both during the first 4 h on day 1 and during the 24-h period of day 1 and day 3 of dosing.
authors: Department of Gastroenterology, University Hospital, Basel, Switzerland.
authors: Franziska
authors: F
authors: Piccoli
authors: Gaëlle
authors: G
authors: Ory
authors: Antoine
authors: A
authors: Hadengue
authors: Christoph
authors: C
authors: Beglinger
authors: Lukas
authors: L
authors: Degen
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D000897:Anti-Ulcer Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D018592:Cross-Over Studies; D004566:Electrodes; D064098:Esomeprazole / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D005745:Gastric Acidity Determination; D005753:Gastric Mucosa / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D000077402:Pantoprazole; D011446:Prospective Studies; D013270:Stomach / Q000187:drug effects
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000897:Anti-Ulcer Agents; D000077402:Pantoprazole; D064098:Esomeprazole