Saxagliptin hydrate is primarily used in the management of type 2 diabetes mellitus. It functions as a dipeptidyl peptidase-4 (DPP-4) inhibitor, which helps regulate blood sugar levels by enhancing the body's ability to release insulin after meals and reducing the production of glucose by the liver. This medication is often prescribed as part of a comprehensive treatment plan that includes diet and exercise. It is typically administered orally and can be used alone or in combination with other antidiabetic agents, such as metformin or sulfonylureas, to achieve better glycemic control. Saxagliptin hydrate is particularly beneficial for patients who need to avoid the risk of hypoglycemia associated with some other diabetes treatments. Regular monitoring of blood glucose levels is recommended to ensure the effectiveness of the therapy and to make any necessary adjustments.