Consumption of non-antibacterial drugs may have negative impact on colonization in the stomach.

Background: Nineteen non-antibacterials were examined to show that their consumption for treatment of other diseases may inhibit . Four antibiotics were used for comparison.

Materials And Methods: Agar dilution method was used to examine the susceptibility of 20  isolates to 4 antibiotics; metronidazole (MTZ), clarithromycin (CLR), amoxicillin (AMX), tetracycline (TET) and 19 non-antibacterials; proton pump inhibitors (PPIs), H-blockers, bismuth subsalicylate (BSS), antifungals, statins, acetaminophen (ACE), aspirin (ASA), B-vitamins (B-Vits; Vit B1, Vit B6 and Vit B and vitamin C (Vit C).