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.
