Aim: To study the prevalence diseases and pattern of drug utilization. Materials and Method: An observational, prospective study was carried out in the department of Pharmacology at Anugrah Narayan Magadh Medical College and Hospital, Gaya, Bihar from April 2019 to Dec 2019. The data was collected from our OPDs. A total of 200 patients were included in the study. Results: In total 670 medications were prescribed in 200 prescription notes. Demographic profile shows more females (60%) as compared to males (40%). Maximum patients (70%) were from age group of 20 – 60 yrs. Most common dosage form was oral in 76%, topical were prescribed in 13% and injectable were prescribed in 11%. Maximum numbers of prescriptions were written for duration of 4 to 5 days in 38% followed by than 7-10 days in 31%, more than 10 days in 18%, 1 to 3 days in 8% and While in 5% of prescriptions duration of treatment was not written. Conclusion: In government sector policy should be framed according to felt need and consumption of the highly demand drugs in a given society, so that it lead to decrease unwanted expenditure on expensive drugs.