BICONVEX RAPIDLY DISINTEGRATING DOSAGE FORMS

摘要

Preparation of solid rapidly disintegrating dosage form (SDF) comprising a porous network of matrix forming materials (MFM) comprises: (a) overfilling a mould with a predetermined amount of aqueous composition comprising MFM so that a convex meniscus is created on top of the mould; (b) freezing; and (c) removing the solvent by subjecting the product to lyophilisation or to solid state dissolution leaving a porous network of MFM. The shape of the bottom surface of the mould is a mirror image of the shape of the frozen meniscus on the top, the mirror plane being parallel to the plane defined by the rim of the mould, yielding a dosage form shaped as a biconvex tablet, having symmetrical top and bottom surfaces. The SDF prepared as above is claimed per se. Also claimed is a metal or plastic sheet for use in the above process for preparing dosage forms shaped as biconvex tablets having symmetrical top and bottom surfaces comprising moulds arranged in a regular pattern, the shape of the bottom surface of each mould being a mirror image of the shape of a predetermined convex meniscus on the top, the mirror plane being parallel to the plane defined by the rim of the mould.