Journal of Gastroenterology

, Volume 39, Issue 1, pp 21–25

The comparative effects of single intravenous doses of omeprazole and famotidine on intragastric pH

  • Yasunobu Abe
  • Masahiko Inamori
  • Jun-Ichi Togawa
  • Taisuke Kikuchi
  • Kenichi Muramatsu
  • Gaku Chiguchi
  • Harunobu Kawamura
  • Noritoshi Kobayashi
  • Hiroyuki Kirikoshi
  • Takashi Sakaguchi
  • Tomoo Takamura
  • Atsushi Nakajima
  • Norio Ueno
  • Hisahiko Sekihara
Article

DOI: 10.1007/s00535-003-1240-6

Cite this article as:
Abe, Y., Inamori, M., Togawa, JI. et al. J Gastroenterol (2004) 39: 21. doi:10.1007/s00535-003-1240-6

Background

The ideal medication for the treatment of acid-related diseases, for example, hemorrhagic ulcers and stress-related gastric bleeding, should have a rapid onset of action to promote hemostasis and alleviate symptoms. The aim of our study was to investigate the inhibitory effects on gastric acid secretion after single intravenous administrations of omeprazole 20 mg and famotidine 20 mg.

Methods

Ten healthy Helicobacter pylori-negative male subjects participated in this randomized, double-masked, two-way crossover study. Intragastric pH was monitored continuously for 4 h after a single intravenous administration of omeprazole 20 mg and after a single intravenous administration of famotidine 20 mg. The administration of the two agents was separated by a 7-day washout period.

Results

In all ten subjects, the length of time that intragastric pH remained over 3, during the 0- to 3- and 0- to 4-h study periods, was greater after famotidine treatment than after treatment with omeprazole, and famotidine increased the average pH during the 0 to 3- and 0 to 4-h study periods significantly more than omeprazole did. During the 4-h study period, famotidine provided a longer duration of pH of more than 2, 3, 3.5, 4, 5, 6, and 7, compared to omeprazole.

Conclusions

In Helicobacter pylori-negative healthy male subjects, an intravenous dose of 20 mg famotidine increased intragastric pH more rapidly than intravenous omeprazole 20 mg.

Key words

intragastric acidity omeprazole famotidine proton pump inhibitor H2 receptor antagonist 

Copyright information

© Springer-Verlag Tokyo 2004

Authors and Affiliations

  • Yasunobu Abe
    • 1
  • Masahiko Inamori
    • 1
  • Jun-Ichi Togawa
    • 1
  • Taisuke Kikuchi
    • 1
  • Kenichi Muramatsu
    • 1
  • Gaku Chiguchi
    • 1
  • Harunobu Kawamura
    • 1
  • Noritoshi Kobayashi
    • 1
  • Hiroyuki Kirikoshi
    • 1
  • Takashi Sakaguchi
    • 1
  • Tomoo Takamura
    • 1
  • Atsushi Nakajima
    • 1
  • Norio Ueno
    • 1
  • Hisahiko Sekihara
    • 1
  1. 1.The Third Department of Internal MedicineYokohama City University School of MedicineYokohamaJapan

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