The present invention relates to a gastric retentive tablet composition comprising: (1) coated particles consisting of a drug and an amino methacrylate copolymer, and (2) an excipient, wherein the ingredients are blended together, and then compressed into a gastric retentive tablet. Thus, the coated particles 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.
