Patent ID: 7923025
Filing Date: 2011-04-12
Classification: A61K,A61P

Abstract:
1. A method for inhibiting decomposition of a biologically active peptide, said method comprising orally administering an aminoalkyl methacrylate copolymer E, which is a copolymer of methyl methacrylate, butyl methacrylate, and dimethylaminoethyl methacrylate, to prevent decomposition of said biologically active peptide by a digestive enzyme, wherein said aminoalkyl methacrylate copolymer E is used in the presence of an acidic substance, said acidic substance being an inorganic acid or an organic acid; wherein the amount of the acidic substance added is 0.005-50 parts by weight per 1 part by weight of aminoalkyl methacrylate copolymer E; and wherein the active peptide is formed into a member selected from the group consisting of a tablet, a pill, a liquid, a suspension, an emulsion, and a capsule.