Hill's Prescription Diet Derm Complete is a clinically proven nutritional solution that effectively manages itching, regardless of whether it is food or environmental related. With results from the first meal, it is a food formulated with delicious ingredients, with an irresistible flavour for your furry friend. A nutrition with limited ingredients and a single source of animal protein, with Histaguard complex, a patented combination of bioactives and phytonutrients and high levels of essential fatty acids.