Helicobacter pylori (H. pylori) is found in the stomach of approximately 50% of humans, remains there for almost the entire lifetime of the infected individual, leading to various gastrointestinal tract-associated disorders following full-blown infection. A review article published in the Journal of Applied Biomedicine in 2018 discussed that propolis, a promising alternative to the antibiotics, is a useful therapeutic regimen against H. pylori, one of the causes of gastric inflammation, peptic ulcer, gastric cancer, and lymphomas of mucosa-associated lymphoid tissues. The authors compiled the scientific evidence that a regular intake of propolis induces positive effects on H. pylori-induced gastrointestinal tract disorders.
Reference: Shapla, U M, et al. "Propolis: The future therapy against Helicobacter pylori-mediated gastrointestinal diseases." Journal of Applied Biomedicine 16.2 (2018): 81-99.