Pharmacovigilance is a scientific research and activity related to the discovery, evaluation, understanding and prevention of adverse reactions or any other problems that may be related to drugs. Pharmacovigilance involves not only the adverse reactions of drugs, but also other problems related to drugs.

Pharmacovigilance starts from the safety of users, and finds, evaluates and prevents adverse drug reactions. Ask to report any questions. No matter whether the quality, usage and dosage of drugs are normal or not, it pays more attention to the comprehensive analysis of causality, which is easy to be accepted by the majority of informants. The ultimate goal of pharmacovigilance is to use drugs reasonably and safely; Evaluate and communicate the risks/benefits of listed drugs; Provide training and education to patients, and timely feedback relevant information.