PHARMACEUTICAL PREPARATION
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United States of America Patent
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Jul 27, 2017
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Apr 8, 2011
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Abstract
The present invention provides a pharmaceutical preparation comprising a layer-by-layer thin film that is produced by alternately layering a polycation and a polyanion, and a drug loaded onto the layer-by-layer thin film. As a result, a pharmaceutical preparation with a prolonged duration of drug action with a single dose is provided.
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