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Sitagliptin is an antidiabetic drug used to manage type 2 diabetes mellitus. It works by inhibiting the enzyme dipeptidyl peptidase-4 (DPP-4). This inhibition increases the levels of naturally produced incretins, which are gastrointestinal hormones that stimulate insulin release from the pancreas and help regulate blood glucose levels. Sitagliptin is taken orally and is often used in conjunction with other diabetes medications or lifestyle changes. While generally well-tolerated, potential side effects can occur.12

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