Film applicable to oral mucosa and drug preparation comprising the same
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United States of America Patent
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Nov 24, 1992
Grant Date -
N/A
app pub date -
Jan 31, 1990
filing date -
Jan 31, 1989
priority date (Note) -
Expired
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Abstract
A soft film applicable to the oral mucosa and a drug preparation comprising said film are disclosed, the film comprising a homogeneous mixture comprising a vinyl acetate homopolymer, an acrylic acid polymer, and a cellulose derivative capable of being dissolved in or swollen with water and a lower alcohol. The film or preparation is less causative of an adverse feeling on application to the oral mucosa, excellent in shape retention on water absorption, and adhesive to the oral mucosa for an extended period of time.
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