Pharmacovigilance: what to do if you see an adverse reaction and the consequences.

With outset in a recently identified safety signal--the association between gadolinium and nephrogenic systemic fibrosis--the article highlights the aim of pharmacovigilance and provides an overview of the European regulatory drug safety network. The main objective of the article is to provide appropriate information concerning the regulatory environment to health care professionals working in a clinical setting. The important role played by health care professionals in drug safety surveillance, as well as examples of how the regulatory decision making is functioning in practice, are described and exemplified by means of the gadolinium case.