Method for providing a beverage additive

A method of introducing a probiotic bacterial formulation to an oral cavity of an individual, comprising;

• providing a beverage container, comprising:
• a flow path providing flow of fluid contents of the beverage container out from the beverage container;
• a probiotic bacterial beverage additive composition comprising an isolated, non-pathogenic, hydrogen peroxide bacterial species or strain and an LDH-deficient bacterial strain, wherein the isolated, non-pathogenic, hydrogen peroxide bacterial species or strain and the LDH-deficient bacterial strain are provided as a stabilized bacteria preparation;
• a passage encompassing a submergible body comprising a moisture resistant barrier that encloses the beverage additive, wherein the passage comprises an upper stop and a lower stop positioned to retain the submergible body within the flow path, wherein the submergible body is movable between the upper and lower stops;
• and
• a dispensing mechanism positioned to circumvent the moisture resistant barrier and place the stabilized bacteria preparation in contact with fluid contents of the beverage container on passage of fluid contents of the beverage container through the flow path;
• activating the dispensing mechanism;
• and
• dispensing a mixture of the stabilized bacteria preparation and fluid contents of the beverage container to the oral cavity.