An oral dosage form of a pharmaceutical composition for managing diabetes in a subject is provided, which comprises a core, a controlled membrane film, and an outer film. The core comprises a first antidiabetic agent. The controlled membrane film coats the core tablet and can realize a controlled release of the first antidiabetic agent from the core into a portion of a digestive tract of the subject corresponding to a stomach and an upper gastrointestinal tract after the pharmaceutical composition is orally administered to the subject. The controlled membrane film comprises at least one controlling polymer, each selected from an Eudragit polymer, an Aquacoat polymer, or an Ethocel polymer. The outer film comprises a second antidiabetic agent, and coats the controlled membrane film. A method for manufacturing an oral dosage form of a pharmaceutical composition is also provided.
