Adverse Drug Reaction (ADR) is a complex health problem and contributes significantly to patient morbidity and mortality. Geriatrics is one of the populations most at risk of experiencing ADR events. Due to age, there is an extended half-life and an increase in blood levels of the drug. Multi-pathology and polypharmacy conditions are the biggest risk factors that participate in the occurrence of ADR. ADR reporting is one way to prevent ADR in health care facilities. The research was conducted in the internal ward of Dr. M. Djamil Padang from February to June 2020. The data was collected using a semi-structured interview method with 22 informants who were selected based on the purposive sampling technique. The results showed the knowledge of health workers on duty in the inpatient ward of Dr. M. Djamil Padang regarding ADR is considered to be still lacking. The awareness of health workers in reporting ADR incidents is also low. The limited knowledge of health workers has resulted in a lack of reporting of ADR incidents in Dr. M. Djamil Padang.

Keywords : Adverse Drug Reaction, Geriatric, Health Personnel