Mitsubishi Tanabe Pharma Corporation

Hideki Murakami

Yoshiyuki Koida

Masaaki Sugimoto

Shoji Takebe

Intraorally rapidly disintegrating tablets which, when ingested, disintegrates in the oral cavity rapidly without presenting unpleasant taste, can be quickly absorbed in the digestive tract and express efficacy are provided. The intraorally rapidly disintegrating tablets contain a drug being hardly water-soluble under neutral or alkaline conditions and being highly water-soluble under acidic conditions yet presenting unpleasant taste, which tablets can be prepared by combining the medicinal substance with a water-soluble acidic substance, coating either or both of the substances with a water-soluble coating agent being insoluble in alcoholic solvent, further adding a water-soluble binding agent being soluble in alcoholic solvent and a water-soluble saccharide, subjecting the resultant mixture to compression, and treating the products with an alcoholic solvent.

Tablets quickly disintegrated in oral cavity

The present invention provides a preparation for oral administration containing a medicinal substance having cGMP-specific phosphodiesterase inhibitory activity and showing decrease of solubility in the neutral and alkaline regions, wherein an acidic substance is compounded promote the dissolution of the medicinal substance in digestive tract and thus the efficacy can be expressed at the early stage after administration, and which preparation is useful in treatment of erectile dysfunction.

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Kobe, Japan

Hideki Murakami