Between 50% and 100% of people in countries with poor access to clean water are infected with a bacterium called Helicobacter pylori. This bacterium is a leading cause of stomach ulcers, and it can even cause gastric cancer.

There is already treatment available to remove the bacterium from the stomach and, in that way, remove the cause of the ulcers. But—the existing treatment requires large amounts of several antibiotics taken at the same time, and a rigorous medication regimen for about a week or eve

The results are often good, but this traditional treatment can cause significant side effects and wreak havoc on the gut microbiome.