Royal canin veterinary diet sensitivity control sc 21 is a special feed for dogs with food allergies or intolerances which have lead to diseases of the digestive system the feed supports healthy intestinal mucosa and balanced intestinal flora typical symptoms include chronic acute diarrhoea and inflammation of the intestines or stomach also itching skin inflammation and fur problems often imply the existence of an allergy the limited protein sources in this feed duck and tapioca do no