Capsule for the preparation of a nutritionalproduct in a device adapted to supply liquidin the capsule, said capsule comprising: at least onecompartment (13) containing nutritional ingredientsfor the preparation of the nutritional product in combinationwith the supplied liquid, a filter adapted forremoving contaminants contained in the liquid,wherein the filter is formed as a relatively rigid filterunit (18) which comprises a filter membrane (20)and ah outlet wall (23) for supporting the filter membrane；the outlet wall comprising at least one liquidoutlet (26) communicating with the compartment(13). The invention also relates to the filter unit (18)as such.
