Patent ID: 7727552

Claim:
An oral medicine preventing an unpleasant taste which comprises a mixture comprising a basic medicine having an unpleasant taste and an acidic polysaccharide, wherein the mixture is in a homogeneous blend and said basic medicine and acidic polysaccharide are in intimate contact in order to form an electric interaction and to prevent the basic medicine from dissolving in saliva; said homogeneous blend further comprises a filler, a binding agent or disintegrant, or both a filler and a disintegrant; said medicine is in the form of granules or fine granules for oral administration or a tablet for oral administration comprising the homogeneous blend; said acidic polysaccharide is at least one member selected from the group consisting of carrageenan and salts thereof; said acidic polysaccharide is in an amount of 0.1 to 20 parts by weight with respect to 1 part by weight of the basic substance having the unpleasant taste, and said basic medicine is donepezil hydrochloride.