According to the definition given in Directive 2001/83/EC:
‘(a) Any substance or combination of substances presented as having properties for treating or preventing disease in human beings; or
(b) Any substance or combination of substances which may be used in or administered to human beings either with a view to restoring, correcting or modifying physiological functions by exerting a pharmacological, immunological or metabolic action, or to making a medical diagnosis.’
[Definition of term as defined in MDCG 2021-24 No. 3.1.8]