According to a study conducted in Taiwan, yogurt may help in eradicating the stomach ulcer causing bug.

The most common cause of the stomach ulcers is bacterium Helicobacter pylori, which doctors usually try to treat with antibiotic therapy. But in 10-23 percent cases the treatment fails.

But according to a new study eating yogurt containing the beneficial bacteria Lactobacillus and Bifidobacterium (AB-yogurt) before trying a second round of combo antibiotic therapy can improve its efficacy in eradicating residual H. pylori, the researchers found.

"The pretreatment can decrease the bacterial loads of H. pylori," Dr. Bor-Shyang Sheu from National Cheng Kung University Hospital in Tainan told Reuters Health.

Sheu and colleagues randomly assigned 138 patients, in whom the ulcer bug persisted after triple to quadruple-antibiotic therapy, with or without four preceding weeks of taking AB-yogurt daily.

The investigators report in the American Journal of Clinical Nutrition that the eradication rate of H. pylori was 91 percent in the yogurt-plus-quadruple therapy group compared with 77 percent in quadruple therapy-only group.