A pharmaceutical composition for use in oral medication for the treatment of diabetes mellitus can include an antacid agent with an enteric coating, which permits the antacid agent to be delivered in the small intestine where it reduces acidity thereby causing a lowering of blood sugar levels. The pharmaceutical composition can be packaged in various tablet forms, including standard tablets and multiple pellet tablets. The pharmaceutical composition can further include a composition for treatment of diabetes, such as metformin, in enteric or non-enteric formulations. The pharmaceutical composition can further include an enteric-coated gastric acid secretion inhibitor. Also disclosed are methods for the treatment of diabetes mellitus, using the pharmaceutical composition and its variants.
