Abstract
As Helicobacter pylori plays an important role in the aetiopathogenesis of peptic ulcer, therapeutic strategies aimed at maintaining long term remission have shifted from the control of intragastric pH to targeting H. pylori. According to recent international guidelines the clinical goals — rapid ulcer healing and prevention of relapse — can be best accomplished by combination therapy consisting of an antisecretory drug (proton pump inhibitor or ranitidine) and 2 antimicrobial agents (preferable amoxicillin, clarithromycin or metronidazole).
When applying such multidrug regimens, possible synergy between the agents suggests that pharmacokinetic considerations might help to improve H. pylori eradication rates, which should be above 85 to 90% on an intention-to-treat basis. The present review summarises the pharmacokinetic properties and interaction potential of all drugs presently used in the various H. pylori eradication regimens, with emphasis on particular patient populations such as the elderly and those with renal impairment. The drugs considered are omeprazole, lansoprazole, pantoprazole, rabeprazole, ranitidine and ranitidine bismutrex, bismuth salts, amoxicillin, clarithromycin, azithromycin, roxithromycin, metronidazole, tinidazole and tetracycline.
When addressing the clinically important questions of the efficacy, safety and costs of the recommended regimens, the impact of drug disposition on H. pylori eradication should not be neglected.
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References
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Acknowledgements
This work was supported by the Robert Bosch Foundation of Stuttgart, Germany. The secretarial help of Mrs H. Köhler was greatly appreciated.
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Klotz, U. Pharmacokinetic Considerations in the Eradication of Helicobacter Pylori . Clin Pharmacokinet 38, 243–270 (2000). https://doi.org/10.2165/00003088-200038030-00004
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DOI: https://doi.org/10.2165/00003088-200038030-00004