Royal Canin Veterinary Diets Calm Dry Adult Cat Food has been specially formulated to help support cats during periods of adaptation and cats prone to behaviour changes in unusual situations and environments.This formula helps to control the formation of hairballs by helping to eliminate ingested hair through your cats stools. ROYAL CANIN Calm is formulated to support the skins natural protective barrier role. This diet promotes a urinary environment unfavourable to the development of both struvite and calcium oxalate crystals. Please consult with your veterinarian to determine the best diet for your pet. Transitioning your pet from one diet to another should be a smooth and gradual process over a 710-day period. Please ensure you follow the correct rationing amount.Key Benefits Contains hydrolysed milk protein and L-tryptophan to help support cats prone to behaviour changes in unusual environments and situations A specific blend of fibres, including psyllium, helps control hairb