Estimated to affect 1 in every 2 people worldwide, H. pylori is a harmful strain of bacteria affecting the stomach and gut. If left unmanaged, H. pylori can lead to significant digestive issues � responsible for approximately 80% of stomach ulcers. ??CONTROLS HARMFUL FLORA. Pylopass� is a patented and clinically verified strain of L. reuteri (DSM 17648) and serves as a natural solution for controlling levels of specific unwanted flora, specifically H. pylori. Pylopass� is highly targeted only binding to and eliminating the specific harmful flora, while leaving good bacteria intact.