Warnings for Sitagliptin: 1. Do not use in patient with known hypersensitivity to this medicine.
2. Do not use in type I diabetes treatment, patients with ketoacidosis, severe infection or serious accident.
3. Avoid to use in pregnancy and lactation.
4. Should not use concomitantly with alcohol.
5. This drug may increase risk of severe joint pain.
Warnings for Metformin: Use this drug according to medical prescription. If the patient feels dizziness please consult a physician.