Case C-589/23, Cassella-med and MCM Klosterfrau: Judgment of the Court (Fifth Chamber) of 13 March 2025 (request for a preliminary ruling from the Bundesgerichtshof – Germany) – Cassella-med GmbH & Co. KG, MCM Klosterfrau Vertriebsgesellschaft mbH v Verband Sozialer Wettbewerb eV (Reference for a preliminary ruling – Medicinal products for human use – Directive 2001/83/EC – Article 1(2)(b) – Concept of medicinal product by function – Concept of pharmacological action – Binding of a substance, in a reversible manner, to bacteria to prevent them from adhering to human cells – Article 2(2) – Applicable legal framework – Classification as a medical device or as a medicinal product – Medical devices – Directive 93/42/EEC – Article 1(2)(a) – Concept of medical device)