A Study on Drug Prescribing Pattern in Psychiatry Out-Patient Department from a Tertiary Care Teaching Hospital

Background: Conventional public health statistics, which concentrate on mortality rather than morbidity or dysfunction, severely underrepresent the massive burden of sickness caused by behavioral and psychiatric illnesses. Objective: To determine the prevalence of psychiatric disorders and the patterns of psychotropic drug prescriptions. Materials and Methods: It was a hospital-based prospective observational study was conducted in the Department of Pharmacology & Therapeutics, Sir Salimullah Medical College & Hospital during July’ 2022 to December’ 2022. A total of 765 prescriptions were selected. All patients attending the psychiatry OPD during the period of the study were included and analyzed as per the WHO drug indicators. Results: Clonazepam constitutes 119 (51.74%), Lorazepam 74 (32.17%), and Others 37 (16.09%) of the 230 anxiolytics listed in the table. In 195 antidepressant drugs, 76 (38.97%) were escitalopram, 33 (16.92%) were amitriptyline, 47 (24.10%) were imipramine, and 39 (20%) were other antidepressants. Antipsychotics were detected in 194 patients (21% of the cohort population). This includes Olanzapine (88.36%), Haloperidol (34.54%), Risperidone (14.22%), and Other Antipsychotics (12.89%). Trihexyphenidyl was prescribed to 75 of the 88 study participants, accounting for 85.23% of the total. Prescribing Indicators and it was observed that an average number of drugs per prescription were 2.59±1.37. Average number of Antipsychotics prescribed per prescription was 2.73±1.46. The number of antipsychotic drugs prescribed by generic name was 52.94%. Percentage of injectable drugs prescribed 2.48%, Percentage of the prescriptions containing psychotropic FDC 20.78%, Percentage of psychotropic drugs prescribed from essential drug list 42.75%, Percentage of psychotropic drugs prescribed from hospital pharmacy 62.22%. Conclusion: The most frequently prescribed antidepressant, antipsychotic, and BZD medications were escitalopram, olanzapine, and clonazepam, in that order. Carbamazepine was preferred over lithium as a mood stabilizer.