Table 1.

Definitions of nutritional supplements and nutraceuticals

Term	Source	Definition
Food supplement	United States Government Office, 1994	A product (other than tobacco) in the form of a capsule, powder, softgel, or gelcap intended to supplement the diet to enhance health that bears or contains one or more of the following dietary ingredients: a vitamin, mineral, amino acid, or other botanical or dietary substance. United States Food and Drug Administration (FDA). Dietary Supplement Health and Education Act (DSHEA). U.S. Department of Health and Human Services. 1994. United States. Public Law 103–417. https://www.fda.gov/food/information-consumers-using-dietary-supplements/questions-and-answers-dietary-supplements
Food supplement	European Union (EU) and European Commission (EC), 2002	Food product whose purpose is to supplement the normal diet and which consists of a concentrated source of nutrients or other substances with nutritional or physiological effects, single or in combination, marketed in dosed formulations, such as capsules, tablets or pills, designed to be taken in small individual quantities measured. EU Directive 2002/46/EC https://ec.europa.eu/food/safety/labelling_nutrition/supplements_en https://eur-lex.europa.eu/eli/dir/2002/46/oj
Nutraceuticals	Brower V., 1998	Any substance that is a food or a part of a food and is able to induce medical and health benefits, including the prevention and treatment of disease [13]
Nutraceuticals	European Nutraceutical Association (ENA), 2016	Nutritional products that provide health and medical benefits, including the prevention and treatment of disease [14]