| abstract |
The drug delivery system is also a unit dosage form comprising a water-soluble thin film matrix, wherein the film matrix is: a) polyvinyl alcohol-polyethylene glycol as water-soluble matrix polymer A graft copolymer (PVA-PEG graft copolymer); b) an active ingredient which is a steroid where both the 6 and 7 positions of the steroid skeleton are —CH 2 —residues; and the film matrix is 300 μm Also contemplated as a unit dosage form with a thickness of less than. |