Nutraceuticals can be defined as components that are isolated or purified from food which exhibit a physiological benefit and provide protection against disease. These components exert a beneficial effect upon health rather than contributing to nutrition, in distinction to other raw materials used in animal feed.

Park Tonks nutraceuticals, as well as being assured under the FEMAS scheme, are subject to strict quality controls. They are sourced from approved suppliers around the world who have the appropriate technical expertise. Before a raw material is used it undergoes detailed analysis, bioavailability and stability tests. Further batches are evaluated according to their active principles or specific actions often including antioxidant capacity. In vitro and in vivo investigations are also carried out on raw materials and finished products.