Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Dog Food

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17.6-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. By feeding your pet a diet that contains precise amounts of key nutrients, you can not only help minimize vomiting, diarrhea,or constipation, you can also help to support and improve the function of the gastrointestinal structures. This gastrointestinal diet is formulated to help maintain the balance of gastrointestinal microflora and intestinal mucosal integrity.

Key Benefits

  • Canine Gastrointestinal Fiber Response is a highly digestible, palatable, complete and balanced dry dog food
  • Includes an optimal blend of insoluble and soluble fiber to help regulate intestinal transit.
  • High level of insoluble fiber aids in the management of fiber responsive colitis and diarrhea
  • Contains a combination of highly digestible proteins, prebiotics and EPA & DHA helps support digestive health
  • Developed by nutritionists and veterinarians, this kibble tastes great and nutritionally supports your dog's healthy digestion

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
  • Breed Size
    All Breeds, Small, Medium, Large
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Sensitive Digestion, Prescription Food

Nutritional Info


  1. Chicken By-Product Meal, Brewers Rice, Chicken Fat, Powdered Cellulose, Rice Hulls, Corn, Wheat, Corn Gluten Meal, Natural Flavors, Wheat Gluten, Dried Plain Beet Pulp, Fish Oil, Monocalcium Phosphate, Grain Distillers Dried Yeast, Psyllium Seed Husk, Sodium Silico Aluminate, Potassium Chloride, Salt, Calcium Carbonate, Fructooligosaccharides, L-Lysine, Vegetable Oil, Dl-Methionine, Hydrolyzed Yeast, Taurine, Choline Chloride, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Biotin, D-Calcium Pantothenate, Vitamin A Acetate, Niacin Supplement, Pyridoxine Hydrochloride (Vitamin B6), Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Riboflavin 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. 3,334 kcal/kg, 287 kcal/cup
Guaranteed Analysis
Crude Protein 21.0% min
Crude Fat 14.0% min
Crude Fiber 12.5% max
Moisture 10.0% max
Eicosapentaenoic Acid (EPA) 0.18% min
Docosahexaenoic Acid (DHA) 0.08% min

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Customer Reviews

84 reviews 84 Reviews 4.8 out of 5 Stars
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98% Recommend

98% of reviewersrecommend this product

4.8 / 5
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Showing 1-10 of 84 Reviews

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  • Great food

    By on

    I have a Doberman with a very sensitive gutt. He gets explosive for days. Its really horrible for him and myself. His old prescription was a great food and it helped a lot but this food is way better. He likes it more and adjusted to it much faster and he has a much better out put (if you know what I mean) since we started this food. Very happy mom and best buddy. Highly recommend.

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  • Royal Canin Gastrointestinal Fiber Response saved my Basset Hound's life

    By on

    Gunner was throwing up a quart of bile a day. He would not eat anything a second time. Doc found a mass in his stomach. We tried dozens of food. He didn't starve because he would eat something one day but everything he ate made him sick so he wouldn't eat it a second time. Found the Fiber Response and he hasn't missed a meal in a year and a half. Mass is gone. He is doing great. Thank you Royal Canin and thank you Chewy as it is way less expensive than buying through the vet.

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  • Very Effective

    By on

    My German Shepherd began having terrible diarrhea. After a couple visits, to the Vet, she recommended trying this food. Two meals later, the problem stopped. Dog loves the flavor.

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  • Great but pieces are a little small

    By on

    I love this food! It has worked so well for my Alaskan Mals sensitive stomach, we have tried so many other foods but she would still have diarrhea... then our vet told us about this and after a couple feedings the diarrhea was completely gone! My Mal is pretty big and the kibble size is kind of small for her she will sometimes swallow it whole...but it's still a great food!

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  • Not worth the cost

    By on

    My dogs love to eat it but the reason I got this food was to help them go to the bathroom. I did not see much of a difference. I will look for a less costly way to help them go.

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  • Amazing dog food!

    By on

    Very impressed with this dog food! My Rhodesian ridgeback was having some major thyroid issues as well as ear, teeth, and excessive shedding which is not normal at all. It was all because of the wrong dog food, within one week of using Royal Canin we have seen a MAJOR turn around!!!!!

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  • Service

    By on

    It's not the product that deserves the review, it was the service. The item we purchased by prescribed by our vet and we couldn't find it any where. Finally someone suggested that we take a look at your site. It was easy, came in a couple of days. No fuss no muss. Thanks, we will be back.

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  • Royal Canine Fiber Response

    By on

    Royal canine fiber response is a wonderful product. My boxer has trouble with her GI track I put her on this and problem solved love it will never take her off

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  • Paws up and wagging tails

    By on

    Convenience and My Husky, Chihuahua and Daschund love it! They look healthier!

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  • Helps digestion

    By on

    I decided to try to find a dog food that was suitable for an old dog, a middle age dog and a young dog, and this seems to fit the bill! I was introduced to this food when I put my dogs in the kennel for a few days and this is what they were fed. I am well pleased and the dogs seem to be also.

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