Drug Information Service Development and Utilization in Teaching Hospitals: Lessons from South East Nigeria

Drug information services provide healthcare professionals and patients with timely, evidence-based responses to clinical drug-related queries and are a recognized component of modern pharmaceutical care. In many Nigerian teaching hospitals, dedicated drug information services remain underdeveloped or non-functional. This study examined the development, utilization, and challenges of drug information services in teaching hospitals in South East Nigeria, with sites in Anambra, Enugu, and Abia States. A multi-site qualitative and quantitative design was used. Semi-structured interviews were conducted with 35 pharmacists, physicians, and nurses, and records of drug information queries from the preceding 24 months were audited in hospitals where such documentation existed. Findings revealed that only two of five hospitals had a formally designated drug information unit, and both were understaffed and under-resourced. Query volume was low across sites, suggesting either underutilization or lack of awareness of the service. Healthcare workers cited preference for online databases and peer consultation over formal drug information services. Barriers to development included lack of designated space, absence of funding, and insufficient trained personnel. Interest in using drug information services was high among respondents when asked hypothetically about a well-functioning unit. The study provides a practical roadmap for establishing sustainable drug information centers in teaching hospitals across South East Nigeria, with recommendations for pharmacist staffing, resource procurement, and promotion strategies. Keywords: drug information service, teaching hospital, South East Nigeria, pharmaceutical care, clinical pharmacy