The present Directive lays down some amendments to Directive 81/851/EEC on the approximation of the laws of the Member States relating to veterinary medicinal products, and precisely to Chapter VIa of such Directive, which deals with the pharmacovigilance system and which has been added by Directive 93/40/EEC. In order to ensure the adoption of appropriate regulatory decisions concerning the veterinary medicinal products authorized within the Community, the Member States shall establish a veteri