If family members have Helicobacter pylori, children can take it for a long time to prevent Helicobacter pylori, because Helicobacter pylori is mainly transmitted through the mouth, and China's eating habits are highly contagious, so children can take it for a long time to prevent and eliminate it. Lactobacillus reuteri, a German patent strain, is mild to the stomach and suitable for nourishing and protecting the stomach.