30As regards, in particular, medicinal products which, like those at issue in the main proceedings, are available only on prescription, that broad conception of advertising is supported by the essential aim of Directive 2001/83, which is to safeguard public health (see Damgaard, paragraph 22) and which, in light of the serious consequences for health which may arise from improper use or overconsumption of such medicinal products, justifies a broad interpretation of the prohibition on advertising those products.