| abstract |
A drug delivery system also intended as unit dosage form comprising a thin water-soluble film matrix, wherein said film matrix comprisesn a) a polyvinyl alcohol-polyethylene glycol graft copolymer (PVA-PEG graft co-polymer) as a water-soluble matrix polymer; an active ingredient being a steroid in which the positions 6 and 7 of the steroidal skeleton are both a —CH 2 — residue; andn nsaid film matrix has a thickness of less than 300 μm. |