Januvia (generic: sitagliptin) is a prescription medication used to treat type 2 diabetes in adults. Januvia belongs to a group of drugs called dipeptidyl peptidase-4 (DPP-4) inhibitors, which help lower blood sugar levels.

This medication comes in tablet form and is taken once a day, with or without food.

Common side effects of Januvia include upper respiratory infection, stuffy nose, sore throat, nausea, and diarrhea.