The present invention relates to a solid formulation with improved solubility and maintained stability including a chemical substance poorly soluble in water as a pharmaceutically active ingredient formulated in an improved manner.
More specifically, the present invention relates to a solid formulation having improved water-solubility which comprises a chemical substance poorly soluble in water as a pharmaceutically active ingredient, a water-soluble polymer substance and an inorganic porous substance, characterized in that
(1) the chemical substance poorly soluble in water forms a solid dispersion together with the water-soluble polymer substance,
(2) the water-soluble polymer substance forming the solid dispersion is in the form of fine pieces, and
(3) the water-soluble polymer substance is in the form of fine pieces is maintained to be adsorbed on and/or adhered to the surface of the inorganic porous substance.
The solid formulation can be produced by stirring and mixing a solution obtained by dissolving a chemical substance poorly soluble in water as a pharmaceutically active ingredient and a water-soluble polymer substance in an organic solvent with an inorganic porous substance and then granulating and drying the mixture.
本发明涉及一种固体制剂,它具有更好的溶解性和稳定性,包括以改进方式配制的一种难溶于
水的
化学物质作为药物活性成分。
更具体地说,本发明涉及一种具有更好
水溶性的固体制剂,它包括一种作为药物活性成分的难溶于
水的
化学物质、一种
水溶性聚合物物质和一种无机多孔物质,其特征在于
(1) 难溶于
水的
化学物质与
水溶性高分子物质形成固体分散体、
(2) 形成固体分散体的
水溶性高分子物质呈细小块状,以及
(3) 细粒形式的
水溶性高分子物质被吸附和/或附着在无机多孔物质的表面。
固体制剂可通过将溶于
水的
化学物质(作为药物活性成分)和
水溶性高分子物质溶解在有机溶剂中得到的溶液与无机多孔物质搅拌混合,然后将混合物造粒和干燥而制成。