A complementary feeding stuff (the traditional dietary suplement) is intended to help maintaining the physiological condition of the animal and cannot claim any efficacy in treating and/or preventing pathological states. A complementary feeding for PARrticular NUTrition purposes has evidence of efficacy and effectiveness in treating or preventing pathological condition; the evidence of efficacy is established and PARNUTs are regulated bu European regulation. A PARNUT can claim both therapeutic and preventive effectiveness using a claim provided by law. For dMEGA3 , the external label must state by law: SUPPORT SKIN FUNCTION IN THE CASE OF DERMATOSIS AND EXCESSIVE LOSS OF HAIR