The present invention relates to an apparatus for modifying and feeding a liquid nutritional feeding composition. The apparatus comprises a chamber (3) for receiving a beneficial agent for modifying a liquid nutritional feeding composition, the chamber has an inlet (7) connectable to a container (5) that contains the nutritional feeding composition and an outlet (13) connectable to a feeding means (8,9). A pumping means is associated with the chamber (3) for pumping the nutritional feeding composition from the container into the chamber and back into the container to mix the beneficial agent with the nutritional feeding composition before the outlet (13) of the chamber is connected to the feeding means (8,9). The chamber (3) may comprise at least one flexible wall capable of being squeezed and released for pumping the nutritional feeding composition. The invention also relates to a method for modifying and feeding a liquid nutritional feeding composition.