For the Nutritional Management of Pets with Gastrointestinal Disorders Gastrointestinal (GI) disorders affect the stomach and intestines, causing painful symptoms and problems with your dog's overall health. Some of the more common symptoms include vomiting, regurgitation, flatulence, weakness, diarrhea or constipation. Prescription Diet Canine i/d was developed to help manage dogs with GI disorders. There are several types of GI disorders that affect dogs, including colitis, constipation/diarrhea, gastroenteritis and pancreatitis. ONLY AVAILABLE IN AUSTRALIA - QLD, NSW, VIC AND ACT