KABUL (Pajhwok): Health specialists warn that self-medication for H. pylori — one of the most common bacterial stomach infections — can lead to severe stomach ulcers and, in some cases even cancer. What is H. pylori? He explained that sometimes people infected with H. pylori — about 50 to 55 percent — may not show any symptoms, while in acute cases, symptoms can appear. Herbal Medicine Advertisements for H. pylori on Social MediaSocial media pages widely promote herbal medicines for stomach ailments, including H. pylori and ulcers. One Facebook video states: “Herbal stomach capsules for ulcers, H. pylori, heartburn, gas, stomach inflammation — made from more than 18 different herbs.