One study from the oncology department at Peking University checked the effect of cranberry juice on the bacteria. The participants were assigned to orally receive two 250-ml juice boxes of cranberry juice or matching placebo beverage daily for 90 days. Eleven individuals from the cranberry juice treatment group and only two from the placebo group were negative at 35 and 90 days of experiment. These results are significant. The conclusion was that regular consumption of cranberry juice can suppress H. pylori infection.
Another clinical study conducted by researchers from Israel showed that people who drink a cup of cranberry juice cocktail twice a day are three times more likely to ward off infection with the bacteria than those who do not. The results have been reported in The Inside Tract issue 122.
The researchers found then that compounds in cranberry juice inhibited the progress of three different strains of H. pylori and concluded that elements derived from cranberry juice showed promise as a possible therapeutic agent to eradicate or reduce the H. pylori flora in the stomach.