Abstract: The present invention provides a method for stabilizing an anti-dementia drug in a pharmaceutical composition containing the anti-dementia drug and a high molecular weight basic substance by adding a high molecular weight acidic substance to said pharmaceutical composition. Further, the present invention provides a pharmaceutical composition containing an anti-dementia drug and a high molecular basic substance in which a high molecular weight acidic substance is contained for stabilizing the anti-dementia drug. Furthermore, the present invention provides a method for manufacturing a pharmaceutical composition which comprises steps wherein a solution or suspension containing a high molecular weight acidic substance is added to a mixture of an anti-dementia drug and a high molecular weight basic substance for the sake of stabilizing the anti-dementia drug.

Abstract: A matrix type sustained-release preparation and a manufacturing method therefor are provided wherein dissolution with low pH dependence of a basic drug or a salt thereof at the early stage of dissolution can be ensured in a dissolution test, and wherein as the dissolution test proceeds, a ratio of a dissolution rate of the basic drug or the salt thereof in an acidic test solution to a dissolution rate of the basic drug or the salt thereof in a neutral test solution (dissolution rate in the acidic test solution/dissolution rate in the neutral test solution) decreases with dissolution time at the late stage of dissolution, as compared to the early stage of dissolution. According to the present invention, the matrix type sustained-release preparation contains a basic drug or a salt thereof and at least one enteric polymer, in which solubility of the basic drug or the salt thereof in a 0.1 N hydrochloric acid solution and a neutral aqueous solution, pH 6.0 is higher than in a basic aqueous solution, pH 8.0.

Abstract: A preparation in powder form for administration through mucosa, comprising a medicine of high molecular weight and a cationic polymer is disclosed. By adding a cationic polymer (in particular, a copolymer of aminoalkylmethacrylate or polyvinyl acetal diethylaminoacetate) or a cationic polymer plus a viscous polymer to a medicine of high molecular weight for producing a preparation in powder form, it is possible to achieve effective absorption of the medicine of high molecular weight through mucosa.

Abstract: An object of the present invention is to provide, for the case of implementing a therapeutic method in which at least two kinds of anti-dementia drugs are used together, a composition that has a good therapeutic effect on dementia, and also gives excellent compliance. Another object of the present invention is to provide a composition containing at least two kinds of anti-dementia drugs, in which release of the anti-dementia drugs from the composition is controlled, whereby a combined effect of the anti-dementia drugs can be achieved well. Still another object of the present invention is to provide a composition for which the frequency of administration and the amount taken are reduced and hence compliance can be improved, and a method of manufacturing such a composition.

Abstract: There exists a strong desire both for pharmaceutical compositions which rapidly exhibit pharmacological effects without an increase in the size of the dosage form or a decline in quality due to interactions between a pharmaceutically active ingredient and the disintegrant, and also for a method of preparing such pharmaceutical compositions. Such a desire is especially acute with regard to, for example, preparations which contain a drug such as an analgesic or a quick-acting hypoglycemic drug that requires the rapid appearance of pharmacological effects following administration, preparations which have a high content of the pharmaceutically active ingredient, and preparations which contain two or more different pharmaceutically active ingredients.

Abstract: The present invention provides a method for stabilizing an anti-dementia drug in a pharmaceutical composition containing the anti-dementia drug and a high molecular weight basic substance by adding a high molecular weight acidic substance to said pharmaceutical composition. Further, the present invention provides a pharmaceutical composition containing an anti-dementia drug and a high molecular basic substance in which a high molecular weight acidic substance is contained for stabilizing the anti-dementia drug. Furthermore, the present invention provides a method for manufacturing a pharmaceutical composition which comprises steps wherein a solution or suspension containing a high molecular weight acidic substance is added to a mixture of an anti-dementia drug and a high molecular weight basic substance for the sake of stabilizing the anti-dementia drug.

Abstract: The present invention provides a composition containing fine particles of a hardly-soluble drug which is stable and is not affected by storage environment conditions, as well as a manufacturing method therefor. The present invention provides a fine particle-containing composition containing fine particles of the hardly-soluble drug, a surfactant and a cyclic oligosaccharide, wherein an average particle size of the fine particles is at least 50 nm but not more than 1000 nm.

Abstract: A powdery preparation for transmucosal administration comprising a medicine of high molecular weight, a cationic polymer and, as needed, a viscous polymer, further comprising an effective amount of a basic amino acid. The powdery preparation for transmucosal administration has an improved storage stability for the medicine of high molecular weight while maintaining an improved mucosal absorption of the medicine.

Abstract: A stable liquid medical formulation containing an antibody is provided, which contains a therapeutically effective amount of an antibody in a glutamate buffer and/or a citrate buffer and has a pH between 4.0 and 6.0.

Abstract: The invention provides sustained release formulations comprising donepezil, stereoisomers of donepezil, pharmaceutically acceptable salts of donepezil, or pharmaceutically acceptable salts of stereoisomers of donepezil. The formulations have desirable pharmacokinetic characteristics. Examples include AUC, Tmax, Cmax, dosage-corrected AUC, and dosage-corrected Cmax.

Abstract: The invention provides sustained release formulations of basic drugs, stereoisomers of basic drugs, pharmaceutically acceptable salts of basic drugs, and pharmaceutically acceptable salts of stereoisomers of basic drugs. The basic drugs may be anti-dementia drugs, such as cholinesterase inhibitors or memantine. In one embodiment, the cholinesterase inhibitor is donepezil.

Abstract: An object of the present invention is to provide, for the case of implementing a therapeutic method in which at least two kinds of anti-dementia drugs are used together, a composition that has a good therapeutic effect on dementia, and also gives excellent compliance. Another object of the present invention is to provide a composition containing at least two kinds of anti-dementia drugs, in which release of the anti-dementia drugs from the composition is controlled, whereby a combined effect of the anti-dementia drugs can be achieved well. Still another object of the present invention is to provide a composition for which the frequency of administration and the amount taken are reduced and hence compliance can be improved, and a method of manufacturing such a composition.

Abstract: An object of the present invention is to provide, for the case of implementing a therapeutic method in which at least two kinds of anti-dementia drugs are used together, a composition that has a good therapeutic effect on the dementia, and also gives excellent compliance. Another object of the present invention is to provide a composition containing at least two kinds of the anti-dementia drugs, for which release of the anti-dementia drugs from the composition is controlled, whereby a combined effect of the anti-dementia drugs can be achieved well. Still another object of the present invention is to provide: a composition, for which the frequency of administration and the amount taken are reduced, and hence compliance can be improved; and a method of manufacturing such a composition.

Abstract: A matrix type sustained-release preparation and a manufacturing method therefor are provided wherein dissolution with low pH dependence of a basic drug or a salt thereof at the early stage of dissolution can be ensured in a dissolution test, and wherein as the dissolution test proceeds, a ratio of a dissolution rate of the basic drug or the salt thereof in an acidic test solution to a dissolution rate of the basic drug or the salt thereof in a neutral test solution (dissolution rate in the acidic test solution/dissolution rate in the neutral test solution) decreases with dissolution time at the late stage of dissolution, as compared to the early stage of dissolution. According to the present invention, the matrix type sustained-release preparation contains a basic drug or a salt thereof and at least one enteric polymer, in which solubility of the basic drug or the salt thereof in a 0.1 N hydrochloric acid solution and a neutral aqueous solution, pH 6.0 is higher than in a basic aqueous solution, pH 8.0.

Abstract: A preparation in powder form for administration through mucosa, comprising a medicine of high molecular weight and a cationic polymer is disclosed. By adding a cationic polymer (in particular, a copolymer of aminoalkylmethacrylate or polyvinyl acetal diethylaminoacetate) or a cationic polymer plus a viscous polymer to a medicine of high molecular weight for producing a preparation in powder form, it is possible to achieve effective absorption of the medicine of high molecular weight through mucosa.

Abstract: A powdery preparation for transmucosal administration comprising a medicine of high molecular weight, a cationic polymer and, as needed, a viscous polymer, further comprising an effective amount of a basic amino acid. The powdery preparation for transmucosal administration has an improved storage stability for the medicine of high molecular weight while maintaining an improved mucosal absorption of the medicine.