The acquisition, possession and supply of medicinal products and medicated feedingstuffs held by the groups referred to in Article L. 5143-6 must be carried out under the control of a veterinarian or pharmacist effectively participating in the technical management of the group. In all cases, this pharmacist or veterinarian is personally responsible for applying the provisions of Regulation (EU) 2019/6 of 11 December 2018 and the legislative and regulatory provisions concerning veterinary medicinal products and medicated feedingstuffs without prejudice, where applicable, to the joint and several liability of the group.