Abstract: Objective To study the characteristics of new adverse drug reactions so as to provide reference for effective prevention of new adverse drug reactions. Methods Three hundred and twenty-seven reports of new adverse drug reactions were screened from 856 reports submitted by a hospital between 2019 and 2022. Results Among the 327 new ADR, 245 cases (74.92%) involved people aged 41 or older. In terms of types of drugs, 241 cases (73.70%) were associated with Western drugs and 86 cases (26.30%) with proprietary Chinese medicines. The top three drugs responsible for new ADR were Ginkgo Biloba injection, compound thromboxane tablets, and levofloxacin hydrochloride injection. There were twenty-one drug dosage forms involved, and the top three were injection, powder injection and tablets. Thirteen routes of administration were involved, including 195 cases of intravenous injection (59.63%) and 90 cases of oral administration (27.52%). The systems-organs involved were mainly skin and its accessory injury, followed by injuries to the digestive system and nervous system. Conclusion New adverse drug reactions have their own patterns of occurrence, and targeted monitoring of new adverse drug reactions can improve the level of rational clinical use of drugs and effectively avoid the risk that arises from drug use.

Key words: new adverse drug reactions, characteristic, Ginkgo Biloba injection, compound thromboxane tablets, levofloxacin hydrochloride injection, skin and its accessory injury, digestive system injury, nervous system injury