Patent ID: 8815262
Filing Date: 2014-08-26
Classification: A61K,A61L,A61P

Abstract:
1. A pharmaceutical composition comprising drug-containing nanoparticles having an average particle diameter of from 10 nm to 150 nm, the pharmaceutical composition being obtained by mixing: (a) water with (b) a water miscible solution which contains (i) a poorly water soluble drug having a water solubility of 50 μg/mL or less, (ii) a water miscible solvent, and (iii) a water soluble copolymer having a repeating unit of the following Formula (1), wherein, in Formula (1), n:m is within a range of from 0.25:0.75 to 0.95:0.05; R represents an alkyl group which may have a substituent; R the composition comprises the water soluble copolymer in an amount of from 0.5 parts by mass to 1.5 parts by mass with respect to 1 part by mass of the poorly water soluble drug.