Thijs J C, Van Zwet A A, Moolenaar W, Oom J A, De Korte H, Runhaar E A
Department of Internal Medicine, Bethesda Hospital, Hoogeveen, The Netherlands.
Aliment Pharmacol Ther. 1994 Feb;8(1):131-4. doi: 10.1111/j.1365-2036.1994.tb00170.x.
Triple therapy for Helicobacter pylori using metronidazole is less effective in patients with a metronidazole resistant strain. Moreover, metronidazole is responsible for many side-effects. This open study examined the efficacy and side-effects of a triple treatment regimen substituting clarithromycin for metronidazole.
36 patients with a H. pylori infection, proven by culture, were treated with tripotassium dicitrato bismuthate 120 mg q.d.s., tetracycline 250 mg q.d.s. and clarithromycin 250 mg q.d.s. for 10 days. Eradication was defined as a negative culture and histological examination of antral biopsy specimens, taken at least 6 weeks after completion of the treatment.
Eradication was achieved in 26 patients (72%). The treatment was well tolerated with only 4 (11%) of the patients having significant side-effects.
Triple therapy with clarithromycin seems to be less effective than standard triple treatment when the prevalence of metronidazole resistance is low. It is suggested, however, that this combination could be a valuable alternative in areas with a high prevalence of metronidazole resistance.