The present invention relates to a gastric retentive tablet composition comprising: (1) coated particles essentially consisting of a drug and an amino methacrylate copolymer, (2) a methacrylic acid copolymer and (3) an excipient, wherein items 1, 2, and 3 are blended together, and then compressed into a gastric retentive tablet. Thus, the coated particles (item 1), a methacrylic acid copolymer and the excipient are evenly distributed in the tablet. The excipient is selected from a group consisting of a retarding agent, a binder, a filler, a chelating agent, a diluent, a disintegrant, a lubricant, a colorant, a solubilizing agent, or a mixture thereof. The coated particles (item 1) do not contain methacrylic acid polymer.
本发明涉及一种胃滞留片剂组合物,包括:(1)覆盖颗粒,基本由药物和
氨基
甲基丙烯酸酯共聚物组成,(2)
甲基丙烯酸共聚物和(3)赋形剂,其中1、2和3混合在一起,然后压缩成为胃滞留片剂。因此,覆盖颗粒(项目1)、
甲基丙烯酸共聚物和赋形剂均匀分布在片剂中。赋形剂选自缓释剂、粘合剂、填充剂、
螯合剂、稀释剂、崩解剂、润滑剂、
着色剂、溶解剂或其混合物的组合。覆盖颗粒(项目1)不含
甲基丙烯酸聚合物。