Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Dog Food

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17.6-lb bag
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  • 17.6-lb bag
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This prescription item requires vet approval. Details



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


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

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

Feeding Instructions

Weight Tendency to become Overweight - Daily Amount (Cups) Ideal Weight - Daily Amount (Cups)
4.4 lbs 5/8 5/8
11.0 lbs 1 1/8 1 3/8
22.0 lbs 2 2 1/4
33.1 lbs 2 5/8 3
44.1 lbs 3 1/4 3 3/4
55.1 lbs 3 7/8 4 1/2
66.1 lbs 4 1/2 5 1/8
77.2 lbs 5 5 3/4
88.2 lbs 5 1/2 6 3/8
99.2 lbs 6 7
110.2 lbs 6 1/2 7 1/2
132.3 lbs 7 1/2 8 5/8

It is recommended that your dog be feed 2 to 4 equal portions of the diet per day.

Ensure fresh drinking water is available at all times.

Store this product in a cool, dry place.

Transition Instructions

When changing to a new diet, gradually introduce the new food by mixing it with the previous food over a 5 to 7 day period.

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Customer Reviews

90 reviews 90 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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  • my recent prescription canin diet

    By on

    I have three dogs and we normally try and give them the same type of food. Even though two are the small type of dogs and one is a German Shepard Mix they fortunately are the same in age and all females. All rescue hence just the one has some tummy issues since we found her. Hence we are trying to sort this issue out for her.. She loves the food but unfortunately does not work but the other two enjoy it to the fullest. Recommended another diet and will let you know.

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  • Very satisfied

    By on

    We've been getting this for our dogs who have very sensitive tummies. Found it for much cheaper on and it comes right to my front door. Love this website!

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  • Fast & easy

    By on

    I used to use another way of getting my dogs prescription diet food. is by far a better way to get this food. Which my dogs need, and love!!

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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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  • Great for dogs with sensitive digestive systems

    By on

    My little dog has had digestive issues as he's gotten older, this is the only dog food he can eat without having problems.

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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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  • 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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  • Love convenience

    By on

    Love the automatic shipment. Food has helped my lab that has tummy issues.

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  • Dogs love it

    By on

    Recommended by Vet because of the high fiber and my dogs love this food.

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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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