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
  • Weight
    8.8 pounds
  • 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

Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Cat Food is rated 4.9 out of 5 by 244.
Rated 5 out of 5 by from amazing results miracle food for constipation This is a miracle food. Have a kitty with chronic constipation. Have tried everything with limited success. This food cured the problem. After years of problems, my kitty is now regular and no longer constipated. She also enjoys the taste of the food as do other members of my feline family. Be prepared to see an increase in stool production. Vet says normal and has seen similar results, curing constipation with other clients. I tend to be a food snob and dont like products with gluten and by products. In spite of these, i enthusiastically serve this food to my cat and thankful she no longer suffers. Wish they had a canned food in this formula. I have found if kitty has one good sized portion of the vet formula a day, can also use royal canin gastrointestinal intense as secondary food as it is far cheaper. Again, hate its corn gluten meal and chicken by products meal, wouldn't feed if it didn't work!
Date published: 2017-01-10
Rated 5 out of 5 by from This food is amazing!! Royal Canin Gastrointestinal Fiber Response One of my cats has had issues with constipation for awhile. After trying every brand of food available commercially and even trying a prescription of lactulose, my vet recommended this food. It's a little pricey but within 2 days she was having normal bowel movements and was like a new cat from obviously feeling so much better. This is the only food I will feed her now. (and it's good/safe for all my cats to eat) Chewy's prices are competitive with my vet's office and the auto re-ship option is hassle free. I highly recommend it!! And the ordering process couldn't have been easier. Arrived quickly and was well-packaged.
Date published: 2016-12-02
Rated 4 out of 5 by from Absolutely amazed! My vet and I have tried just about every food there is on the market for my cat for gastro/ constipation problems, natural remedies such as pumpkin, and even laxatives. Nothing even helped remotely. She would go as many as 4-5 days without a bowel movement. My mother said I should try this brand, and what do you know! I only have it mixed in with her regular food 50/50 and there's already a HUGE difference! She's going DOUBLE what she was before!! I strongly recommend anyone try this with a little one that has the same issues!
Date published: 2016-12-26
Rated 5 out of 5 by from Awesome for preventing constipation! We tried many foods to help our seriously constipated cat. Had to take to vet for enemas and give him daily doses of Lactulose until we discovered this food. This cat food was life changing! No more constipation and no need for medicine. Please give it a try, don't hesitate, especially if your cat suffers from constipation. We are so thrilled and pleased with the results. Our cat stays regular while eating this food and it has been nearly a year now. No more problems. It's amazing.
Date published: 2016-12-06
Rated 5 out of 5 by from Excellent for constipated cat Our cat was having serious constipation issues requiring two enemas in a week and she was losing weight and vomiting from straining. Our vet recommended this food. Our cat really likes it and because of the high fiber content her constipation issues have been resolved. Because she doesn't eat a lot, she still doesn't eliminate daily. But when she does, it's no longer hard and she doesn't have to strain and therefore doesn't vomit.
Date published: 2016-12-20
Rated 5 out of 5 by from Stop gastrointestinal problems My cat is 14 and has diabetes. He had been marking in one place in the house and his former vet decided he had a UTI and gave him an antibiotic called Clavamox. This was the worst choice the vet could've made for my cat. He almost immediately had diarrhea and it lasted for many months. A new vet was able to treat my cat a few different ways. First we tried probiotics, then vitamin b12 shots, but neither helped the diarrhea. Once I changed the cat food to Roayal Canin Gastrointestinal Fiber Respinse, the diarrhea quickly cleared up. His bowel movements will never be completely normal again, but he is much healthier and in less discomfort now. Chewy makes it easy to get everything I need for my cats!
Date published: 2017-01-31
Rated 5 out of 5 by from Best product available for cats with gastrointestinal issues As well as gastrointestinal my Maine Coon was also diagnosed with mega colon. This product keeps him alive.
Date published: 2016-12-15
Rated 5 out of 5 by from Royal Canin has turned a sick kitty into a healthy one! 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.
Date published: 2017-02-16
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