Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Cat Food, 8.8-lb bag

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The gastrointestinal tract includes the esophagus, stomach, small intestine, large intestine, and colon. Therefore, gastrointestinal disease is defined as any abnormality involving one or more of these structures. This diet is also formulated to help maintain the balance of gastrointestinal microflora and intestinal mucosal integrity

Key Benefits

  • Feline Gastrointestinal Fiber Response is a highly digestible, palatable, complete and balanced cat food
  • Contains a combination of highly digestible proteins, prebiotics and EPA & DHA help support digestive health
  • Optimal blend of insoluble and soluble fiber supports healthy digestive transit and maintain intestinal health
  • Eicosapentaenoic and docosahexaenoic acids help nourish the digestive system
  • Royal Canin Urinary S/O Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals

Note: Royal Canin Veterinary Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Brand
    Royal Canin
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Sensitive Digestion, Prescription Food

Nutritional Info


  1. Chicken By-Product Meal, Chicken Fat, Brown Rice, Brewers Rice, Corn Gluten Meal, Wheat Gluten, Powdered Cellulose, Natural Flavors, Egg Product, Dried Plain Beet Pulp, Potassium Chloride, Fish Oil, Sodium Silico Aluminate, Grain Distillers Dried Yeast, Calcium Sulfate, Sodium Bisulfate, Dl-Methionine, Psyllium Seed Husk, Salt, Fructooligosaccharides, Monosodium Phosphate, Vegetable Oil, Hydrolyzed Yeast, Taurine, Choline Chloride, L-Lysine, Magnesium Oxide, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Niacin Supplement, Biotin, D-Calcium Pantothenate, Riboflavin Supplement, Pyridoxine Hydrochloride (Vitamin B6), Vitamin A Acetate, Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement], Marigold Extract (Tagetes Erecta L.), Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

  1. 3,687 kcal/kg, 361 kcal/cup
Guaranteed Analysis
Crude Protein 29.0% min
Crude Fat 13.0% min
Crude Fiber 4.7% max
Moisture 8.0% max
Eicosapentaenoic Acid (EPA) 0.18% min
Docosahexaenoic Acid (DHA) 0.08% min

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Customer Reviews

271 reviews 271 Reviews 4.9 out of 5 Stars
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99% Recommend

99% of reviewersrecommend this product

4.9 / 5
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  • My cat Loves it!

    By on

    My tiny 10 year old Manx rescue kitty has had so much problem with food digestion. She vomited every day or so and also had hairball problems. She is also pretty picky about food. After a complete health check and blood tests showed her to have no other health problems, our vet suggested trying a prescription diet for intestinal sensitivities. My cat ate this right away and has been feeling much better since starting this food. Her stools are bigger, no hairball problems or vomiting.

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  • Works great for IBS!

    By on

    I could not be more pleased with this product. As other pet parents have commented, my cat(s) find this food delicious and took to it right away, with noticeable and quick results. This rx is for my male cat with IBS, occasional pancreatitis flares (perhaps related), and urinary (infection/stones) issues. We were very happy to find this diet, because it also has the S/O (urinary) index. I can say my boy is acting more like himself than I have seen in quite a while and has started to put on much-needed weight.

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  • So far, so good :)

    By on

    My fourth rescue kitty had stomach issues and would constantly throw up her food, along with gas and loose stools. After only a few days I noticed a difference, and I was surprised at how she took right to the food. She loves the taste. Keeping my fingers crossed that this does the trick long term. Of course, I am very pleased with the service I get from chewy, as I have been a customer for quite some time now.

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  • great food for constipated kitties

    By on

    My cat Tumbles has a problem with constipation. He has been eating this fiber response food for about a year now and no problems with his bowels until about a week ago. back to the vet he went for a clean out. I think maybe he ate some of the others dry food. the other kitties like the food too! I guess maybe everyone will be eating this now! love it!

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  • Great food to keep things moving

    By on

    The vet put my "big boned" cat on the Royal Canin fiber response diet a few years ago when we were dealing with a bad constipation issue. Haven't had any problems since switching. Both cats eat the food, even though the other did not have problems. Delivery was quick and there were no delays in getting the prescription from my vet.

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  • Best food ever!!

    By on

    This was my cats last chance. If this food did work we were going to have to put her down. She loved it and now her intensions are working and she's doing great and feeling great. This food saved her life, thank you!

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  • ALL my cats love this food

    By on

    This was prescribed for my 4 year old cat that was throwing up bile every day. It took a few weeks for it to work, but it did. In the meantime, my three other cats started eating it too. They prefer it over their other Royal Cain food. Then I got two 6 month old kittens and they now prefer it to their kitten food. It must be really tasty!

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  • Royal Canin has turned a sick kitty into a healthy one!

    By on

    The Royal Canin food is wonderful, as recommended by my vet. But, I must comment on exceptional customer service by Chewey. We thought that the delivery had gone astray. I called and within a day the replacement shipment was on the way. The next day we found that due to the snow storm approaching our delivery had been sheltered in our garage. Upon calling Chewey to explain and to ask for the charges to be added back to our bill, we were told no problem and with Chewey's compliments. We were blown away!!! Thanks.

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    By on

    My cat was having severe problems with constipation after having tried several other remedies with no success he hadn't gone in 3 weeks and within hours of him eating this food he was and still is going normal.

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  • Cat loves it hasn't thrown up

    By on

    Our 13 year old cat was diagnosed with pancreatitis. She was losing weight and throwing up terribly. After spending 3 nights in the hospital on IVs and medications, the vet told us that she was eating again and LOVED the Royal Canin Gastrointestinal food. We bought some and she has gained back some of the weight she lost while sick...and still loves the food. We are thrilled with her amazing progress.

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