I need to begin this answer by saying that you must check with your vet before changing from the diet that has been recommended. Pancreatitis is a complicated disease and a detailed amount of knowledge is needed about your cat’s clinical condition before a particular diet can be said to be exactly the right one. In answering your question I have had to make a number of assumptions that might not all be true.
If a cat has pancreatitis it is important to differentiate if this is pancreatitis with hyperlipidaemia (high levels of fat in the bloodstream) or without hyperlipidaemia. I am assuming because of the diet your cat is on now that there is no hyperlipidaemia as normally a higher fibre diet would be recommended in this case. If the disease is more chronic (ie longer lasting) then it’s possible that your cat is still experiencing some discomfort so as well as the diet being low fat, it must also be tasty to tempt a poor appetite. Some success has been reported with adding pancreatic enzymes to the food as they are thought to reduce abdominal pain. If you want to try another brand of food then Hill’s Precription Diet Feline i/d might be a good choice. It contains reduced levels of fat and higher levels of soluble fibre that help restore intestinal flora. There are additional B vitamins in this food and it is highly digestible. This diet is suitable for cats with pancreatitis without hyperlipidaemia, in recovery from debilitating illness and in exocrine pancreatic insufficiency when the pancreas cannot produce enough enzymes to digest food. Do check with your vet first though and make any changes gradually.
By Libby Sheridan (Hills Pet Nutrition) (Professional Advisor)