The invention relates to flat dosage forms that disintegrate or dissolve in an aqueous environment for releasing at least one active ingredient in a body orifice or body cavity, and which are formed from a polymer matrix in the form of a solidified foam having cavities, and at least one pharmaceutical active ingredient, and which have a high mass per unit area in the region of 50 to 350 g/m². Despite their high mass per unit area and the resulting high active ingredient loading during administration, these dosage forms are characterised by a substantially improved mouthfeel in comparison to conventional film dosage forms. The invention also relates to methods for producing a dosage form of this type.
