The Effect of Gliatamin (Chonline Alphoscerate) on Depressive Mood in Type 2 Diabetes Patients

Inclusion Criteria: * Type 2 diabetic patients * Age ≥ 50 * Glycemic control: HbA1c ≤ 10.0% * 10 ≤ Beck Depression Inventory (BDI) \<30 points * Participants who can undergo contraception in case of being in childbearing period * Understands the study procedure, alternatives, and risks and voluntarily agrees to participate by giving written informed concent Exclusion Criteria: * Type 1 diabetes, Secondary diabetes, gestational diabetes * Ongoing dementia treatment or anti-depressive disorder medication * Uncontrolled psychiatric disorder * BDI ≥ 30 points * Heavy alcoholics * Underlying chronic liver disease (hemochromatosis, liver cell carcinoma, autoimmune liver disease, liver cirrhosis, chronic viral hepatitis) * Allergy or hypersensitivity to target medication or any of its components * Renal failure, moderate or severe renal impairment (estimated glomerular filtration rate \< 30 mL/min/1.73 m2), or ongoing dialysis * Abnormal liver function (AST/ALT \> x3 upper normal limit) * History of alcohol or drug abuse in the previous 3 months * Premenopausal women who are nursing or pregnant * Human immunodeficiency virus (HIV) or human immunodeficiency virus (AIDS) * chronic pancreatitis or pancreatic cancer