30By contrast, it is apparent from Article 1(2)(b) of Directive 2001/83 that the substance in question must be capable of restoring, correcting or modifying physiological functions by exerting a pharmacological, immunological or metabolic action and that capability must have been scientifically established (see, to that effect, Case C-140/07 Hecht-Pharma [2009] ECR I-41, paragraph 26).
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