The North American Veterinary Nutraceutical Council defines a veterinary nutraceutical as a "non drug substance that is produced in a purified or extracted form and administered orally to provide agents required for normal body structure and functionwith the intent of improving the health and well-being of animals". In the UK, regulatory control of nutritional supplements is under EU Food and Feed law. Whilst nutraceutical manufacturers are able to claim benefits to the health of an animal only truemedicinal drugs registered with the Veterinary Medicines Directive are allowed to claim a functional effect of treating or preventing disease (Harris 2009).
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