Sulfonylurea drugs are widely used in the treatment of type 2 diabetes to lower blood glucose levels by stimulating insulin secretion from pancreatic beta cells. They act by binding to ATP-sensitive potassium channels on these cells, causing depolarization and subsequent insulin release. Despite their effectiveness in improving glycemic control, sulfonylureas can lead to several side effects. Hypoglycemia is a significant concern, especially in elderly patients or those with renal impairment, due to their long duration of action and potential for cumulative effects. Additionally, sulfonylureas can cause weight gain, as they may increase appetite and promote fat storage. Long-term use has been associated with beta cell exhaustion and reduced insulin secretion, potentially leading to secondary failure of treatment over time. Moreover, some individuals may experience allergic reactions or gastrointestinal disturbances. Despite these drawbacks, sulfonylureas remain a valuable option in diabetes management, particularly when cost, accessibility, and patient preference are considered alongside their efficacy and side effect profile.