New strains of Lactobacillus and its use against Helicobacter pylori

Use of Lactobacillus cells, as deposited under DSM 17646, DSM 17647, DSM 17648, DSM17649, DSM 17650, DSM 17651, DSM 17652 or DSM 17653, for the preparation of a dietary pharmaceutical composition for prophylaxis and / or treatment of diseases conditioned by infection with Helicobacterpylori, in particular gastrointestinal diseases such as gastric ulcers, with Lactobacillus cells being able to be added to Helicobacter pylori under culture conditions of the human digestive tract, particularly the stomach.