MICROPARTICLE OF HARDLY-SOLUBLE SUBSTANCE HAVING ENTERIC BASE MATERIAL ADSORBED ON THE SURFACE OF THE SUBSTANCE
申请人:Astellas Pharma Inc.
公开号:EP1923051A1
公开(公告)日:2008-05-21
The present invention relates to fine particles of a poorly soluble drug to provide pharmaceutical preparation having an improved absorption by improving dissolution profile of a poorly soluble drug having a poor absorbability, as well as a method for producing the same. In particular, the present invention relates to fine particles of a poorly soluble drug, having an average particle diameter of 1 nm to 1,000 nm, wherein a particular type of an enteric base material is adsorbed on the surface of the poorly soluble drug, fine particles which further comprises a saccharide, as well as a method for producing the same. It is possible to efficiently and safely produce in a short amount of time fine particles with which absorption of a poorly soluble drug that is poorly absorbed in humans, and the like can be improved, and a pharmaceutical preparation with excellent dispersion stability can be provided, by using the fine particles of the present invention having an improved dissolution profile.
本发明涉及通过改善吸收性差的难溶性药物的溶解曲线来提供具有改善吸收性的药物制剂的难溶性药物细颗粒,以及生产这种药物制剂的方法。特别是,本发明涉及平均粒径为 1 纳米至 1,000 纳米的微粒,其中一种特定类型的肠基材料吸附在微粒表面,微粒进一步包含糖,以及生产微粒的方法。通过使用本发明的细颗粒,可以在短时间内高效、安全地生产出细颗粒,从而改善人体吸收率低的难溶性药物等的吸收,并提供分散稳定性极佳的药物制剂。