A composition (I), comprises one or more tannase-producing strains of Lactobacillus plantarum or closely related Lactobacillus species having the ability to adhere to human intestinal mucosa in combination with tannin. An independent claim is also included for a tannase-producing strain (II) of L.plantarum or a closely related Lactobacillus species having the ability to adhere to the human intestinal mucosa, with tannase activity as determined by Osawa and Walsh, excluding the strains L.plantarum 299, DSM 6595, and L.plantarum 299v, DSM 9843. ACTIVITY : Cardiovascular-Gen.; Antidiabetic; Antiinflammatory; Gastrointestinal-Gen.; Cytostatic; Neuroprotective; Nootropic; Immunosuppressive. No supporting data is given. MECHANISM OF ACTION : None given.