Januvia is a prescription medication available in tablet form in strengths of 25mg, 50mg, and 100mg. It contains the active ingredient Sitagliptin and is commonly prescribed for individuals with type 2 diabetes to effectively manage high blood sugar levels. Properly controlling blood sugar levels with Januvia can help prevent complications associated with diabetes, such as kidney damage, nerve damage, blindness, and issues related to sexual function. This medication also plays a significant role in reducing the risk of limb loss and other diabetes-related problems.