Objective
Most therapies for Helicobacter pylori eradication utilize multiple drugs given 2‐4 times daily. Patient adherence has been an impediment to reliably achieving high success. This study evaluated a once‐daily dosing H pylori eradication regimen.
Methods
A prospective randomized pilot study of H pylori eradication compared once‐daily treatment regimen containing levofloxacin (750 mg), clarithromycin‐MR (1 g), rabeprazole (60 mg), and bismuth subsalicylate (1,048 mg) for a 7 or 14 days. CYP2C19 genotype and antibiotic susceptibility tests were performed. Successful eradication was defined as negative 13C‐urea breath test at least 4 weeks after completion of treatment.
Results
100 subjects were randomized (40 men, 60 women with mean age =54 years). The eradication rates were as follows: 94% (47/50; 95%CI 0.87‐1.01) and 84% (42/50; 95%CI 0.73‐0.95) with 14‐day and 7‐day therapy (OR 0.34; 95%CI 0.08‐1.35, P = 0.06), respectively. Resistance rates were as follows: 13.0% for clarithromycin, 26.0% for fluoroquinolone, 2.9% for dual clarithromycin‐fluoroquinolone resistance, and 62.8% for metronidazole. The 14‐day regimen provided 100% eradication in patients with levofloxacin susceptible strain irrespective of the presence of clarithromycin resistance. CYP2C19 genotypes had no effect on cure rates.
Conclusions
The once‐daily 14‐day rabeprazole‐, levofloxacin‐, clarithromycin‐MR‐, and bismuth‐containing therapy provided high eradication rate suggested that triple therapies with a PPI, bismuth, and clarithromycin‐MR or levofloxacin would be highly effective for once‐a‐day tailored therapy or as empiric therapy for first‐line regimen.