Abstract
Drug information service is a dedicated and specialized service provided by pharmacists to enhance knowledge of medicines use, promote rational prescribing among prescribers, and reduce medication errors. Saudi Arabia has a National Drug and Poison Information Center (NDPIC) responsible for answering drug queries. There is a lack of literature that reports the current scenario of drug information services in the country, especially the Eastern Province. This study reported the current status of drug information services being provided among tertiary care hospitals of the Eastern Province of Saudi Arabia. All hospitals provided drug information services. The qualification of personnel was mostly bachelor's level (46.2%) and without proper training (54.8%). The most common queries received in a day were related to drug alternatives, dosage, and administration, as well as the availability of drugs. Physicians were the main users of the service. The most common health resources employed for the service was Lexi-Comp (76.9%) and Micromedex (69.2%). The use of Saudi National Formulary was not reported by any hospital, which highlights a potential research gap to address i.e., to investigate the lack of use of SNF by practitioners.