Patent ID: 9597402
Date: 2017-03-21
CPC Classifications: A61K,A61P

Claim:
1. A formulation, comprising: a copolymer of lactic acid and glycolic acid having a number average molecular weight ranging from 1000 Daltons to 120,000 Daltons; an organic solvent combined with the copolymer to form a viscous gel, the organic solvent being selected from benzyl alcohol, benzyl benzoate, ethyl benzoate, ethyl hydroxide, N-methyl-2-pyrrolidone, and mixtures thereof; and risperidone base in particle form incorporated in the viscous gel, wherein the particles have an average particle size ranging from 0.1 μm to 125 μm, wherein the copolymer and the organic solvent comprise a vehicle, the copolymer is present in the vehicle in an amount ranging from 40% to 55% by weight, and the organic solvent is present in the vehicle in an amount ranging from 45% to 60% by weight.