Aim: To evaluate drug utilization pattern of antidiabetic drug in type-2 diabetic patients attending at private diabetes clinic. So that, this information can be used in assessment of quality of care provided as well as to facilitate the rational use of drugs in populations Objective: To evaluate the current trends of prescribing patterns of antidiabetic drug in type 2 diabetic patients Material and Methods: An observational prospective study undertaken at diabetes clinic from January 2015 to April 2016 after approval from institutional ethic committee. Total 600 patients of type 2 diabetes mellitus were enrolled. Data related to demographic details of the patient (age, gender and BMI, occupation, social status), past history, family history, personal history, all investigations, drug treatment and adverse drug reaction were recorded in suitable case record form. Follow up was carried out for all patients every 3rd , 6 th, 9th and 12th month visit for glycaemic control. Data were entered into Microsoft excel 2010 and analysed by descriptive statistics (percentage, mean, standard deviation) and chi square test. Results: Out of 600 patients, 58.67% were males and 41.33% were females. The mean age of the patients was 51.85 ± 4.24 years. Hypertension (31%) was most common co-morbid illness.Most common complaint was weakness (18.33%). Majority prescriptions had fixed dose combination (FDC) of two antidiabetic drugs (93.2%). Most commonly prescribed FDC was of sulfonylureas (Gliclazide) and Biguanide group (Metformin)in 552(92%). Average number of drugs per encounter was 3.02, 0.3 % drug was prescribed by generic name, 4.17% drug was antibiotic, 7.7% drug was injectable medicine, 14.27% drugs was prescribed from national list of essential medicine and 11.35% drugs were prescribed from WHO essential list of medicine. Fixed dose combinations were prescribed in 57.27% of patients. Glycaemic controlled was observed in 32.84 % patients. Conclusion: Sulfonylurea and Biguanide combination most commonly used to treat type 2 DM and among them Gliclazide and Metformin combinations was most commonly prescribed.