Vildagliptin is a medication used to treat type 2 diabetes. It belongs to a class of drugs known as DPP-4 inhibitors, which help lower blood sugar levels by increasing the amount of insulin released by the pancreas after meals. This action also reduces the amount of sugar produced by the liver. Vildagliptin is often prescribed alongside diet and exercise to improve blood sugar control. It can be taken alone or in combination with other diabetes medications. Common side effects may include headache, dizziness, and gastrointestinal issues, but it is generally well-tolerated by patients.