The present invention refers to a non-antibiotic therapeutic strategy for inhibiting oro-gastro-intestinal infections and pathogens in general and particularly Heliobacter pylori adherence and colonization in the gastrointestinal channel and preventing or relieving associated oro-gastro-intestinal disease. The invention relates to methods and products based on an active cereal product or ferric quinate. The invention is also applicable to other oro-gastro-intestinal pathogens in both humans and animals.