Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Cat Food, 8.8-lb bag
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You’ve tried everything to help with your cat's GI issues, whether those are vomiting, diarrhea, or lack of appetite. And while bland homemade diets are often used for digestive upsets, your cat could be missing some key nutrients to help them fully recover. But with the help of your veterinarian and Royal Canin, there’s not just hope—there can be a true difference.
This high fiber cat food is specially formulated with a blend of soluble and insoluble fibers to aid with intestinal movement for your cat’s GI upsets. Prebiotics help maintain the balance of good bacteria in the gut. A blend of dietary fibers supports healthy digestion for optimal stool quality. Omega-3 fatty acids, EPA and DHA, from fish oil help nourish and soothe the GI tract. And the exclusive S/O Index supports urinary health by creating an environment unfavorable to crystal formation in the bladder.
Key Benefits- Royal Canin Gastrointestinal Fiber Response is a veterinary-exclusive dry cat food for cats with long- or short-term digestive sensitivities
- Promotes digestive health and optimal stool quality with highly digestible proteins and prebiotics
- Formulated to help manage GI health and common gastrointestinal sensitivities
- Enriched with a blend of soluble and insoluble fibers for healthy transit through the GI tract
- Supports urinary health with the exclusive S/O Index, which creates an environment unfavorable to crystal formation in the bladder
Veterinary Authorization
This item needs authorization from your veterinarian. Simply provide your pet and vet clinic information at Checkout and we'll follow up with your veterinarian to confirm. If you have a copy of your authorization, you can expedite the process by uploading a scan or photo of it to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
Diet Transitioning
Pets can be sensitive to sudden changes in their diets. For this reason, it is extremely important to follow a gradual transition plan to best support your pet's health and product effectiveness. Ask your Veterinarian about the best way to transition your pet to a new food.
Veterinary Authorization
This item needs authorization from your veterinarian. Simply provide your pet and vet clinic information at Checkout and we'll follow up with your veterinarian to confirm. If you have a copy of your authorization, you can expedite the process by uploading a scan or photo of it to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
Diet Transitioning
Pets can be sensitive to sudden changes in their diets. For this reason, it is extremely important to follow a gradual transition plan to best support your pet's health and product effectiveness. Ask your Veterinarian about the best way to transition your pet to a new food.
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Item Number48747
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Weight8.8 pounds
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BrandRoyal Canin
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LifestageAdult
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Food FormDry Food
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Special DietPea-Free, Veterinary Diet
Brewers Rice, Chicken By-Product Meal, Corn, Chicken Fat, Corn Gluten Meal, Wheat Gluten, Psyllium Seed Husk, Natural Flavors, Dried Chicory Root, Egg Product, Potassium Chloride, Fish Oil, Calcium Sulfate, Sodium Pyrophosphate, Monocalcium Phosphate, Fructooligosaccharides, Dl-Methionine, Choline Chloride, Vegetable Oil, Salt, Taurine, Hydrolyzed Yeast, Vitamins [Dl-Alpha Tocopherol Acetate (Source Of Vitamin E), L-Ascorbyl-2-Polyphosphate (Source Of Vitamin C), Niacin Supplement, Biotin, Riboflavin Supplement, D-Calcium Pantothenate, Pyridoxine Hydrochloride (Vitamin B6), Vitamin A Acetate, Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement], L-Lysine, Trace Minerals [Zinc Proteinate, Zinc Oxide, Manganese Proteinate, Ferrous Sulfate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], Marigold Extract (Tagetes Erecta L.), Rosemary Extract, Preserved With Mixed Tocopherols And Citric Acid.
Caloric Content3690 kcal/kg, 362 kcal/cup
Guaranteed Analysis | |
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Crude Protein | 29.0% min |
Crude Fat | 13.0% min |
Crude Fiber | 4.7% max |
Moisture | 8.0% max |
EPA + DHA | 0.18% min |
Potassium | 0.6% min |
Sodium | 0.28% min |
Vitamin E | 330 IU/kg min |
Ascorbic Acid | 160 mg/kg min |
Weight | Underweight Daily Feeding (cup) | Ideal Weight Daily Feeding (cup) |
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4.4 lbs | 3/8 | 3/8 |
6.6 lbs | 1/2 | 3/8 |
8.8 lbs | 5/8 | 1/2 |
13 lbs | 7/8 | 3/4 |
17 lbs | 1 1/8 | 7/8 |
Feeding guidelines are general recommendations only. The amount of food required by your cat may vary above or below that listed in this feeding guide. In consultation with your veterinarian it is recommended that you weight your cat 4 - 6 weeks after starting a new diet in order to adjust food intake to maintain or achieve an optimal body weight and body condition score. Consult your veterinarian for specific feeding guidelines for your cat. This diet is formulated to be complete and balanced. It is unnecessary to feed leftover foods, kitchen scraps or additional supplements. It is recommended that your cat be fed 2 - 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.
Pets can be sensitive to sudden changes in their diets. For this reason, it is extremely important to follow a gradual transition plan to best support your pet's health and product effectiveness. It is recommended to follow at least a 7-day transition plan before exclusively feeding your pet a new food. Cats will often refuse mixed diets, so we recommend adding the new food to a separate bowl from the old food. Start by mixing 75% of your pet's current diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the current diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the current diet with 75% of the new diet. On Day 7, you can feed your pet the new food exclusively. Ask your Veterinarian about the best way to transition your pet to a new food.
Transition Day | Current Diet | New Diet |
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Days 1-2 | 75% | 25% |
Days 3-4 | 50% | 50% |
Days 5-6 | 25% | 75% |
Day 7 | 0% | 100% |
Why should I buy veterinary diets from Chewy?
We offer competitive prices and free shipping on orders over $49. Plus, you'll save more if you sign up for automatic refills with Autoship at Checkout. Chewy experts are available 24/7 to answer any questions you have.
How do I order veterinary diets?
- Search for the diet your veterinarian recommends and add it to your cart. You can purchase your veterinary diets along with any other items you need.
- At Checkout, you'll be asked for your pet's name and veterinary clinic information so we can confirm that the item is authorized by your veterinarian.
- Place your order and we'll take care of contacting your veterinarian. If you have a copy of your authorization, you can expedite the process by uploading a scan or photo of it to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
If your clinic needs more information from you or recommends a different diet, we'll let you know immediately.
I have a copy of the authorization from my veterinarian. Can I send it to you?
Yes. If you have a paper copy of your veterinarian's authorization, you can upload a scan or photo to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
Can I use a veterinarian's authorization if it was written by a veterinarian out of state? Yes. We accept valid authorizations from anywhere in the United States, Canada, and U.S. territories such as Puerto Rico.
Why do I need a veterinarian's authorization?
Veterinary diets are formulated with the precise ingredients and nutrients needed to address specific medical issues. Because these diets are formulated for medical issues, veterinary authorization is needed to advise you on the best way to give them to your pet and to monitor your pet's health while they are on the diet.
Can someone else (such as a caretaker or family member) place an order for my pet?
Yes, but we'll need them to contact us and provide the full name of the pet's owner after the order is placed. This is so the veterinary clinic can locate your pet's records when we contact them. Email us at vetdiet@chewy.com or call us 24/7 at 1-800-672-4399.
Do authorizations expire?
Yes. Your veterinarian will tell us when your authorization expires and how many refills you have before they'd like you to check back in with them.
Can I set up automatic refills? Yes. Sign up for Autoship at Checkout and select how often you need refills. We'll automatically ship your veterinary diets for as long as your authorization allows. If you run out of refills or your authorization expires, we'll automatically contact your veterinarian for a new authorization.
What if I have more questions? How can I reach the veterinary diets team at Chewy?
Email us at vetdiet@chewy.com, start a chat on Chewy.com, or call us anytime at 1-800-672-4399. We're here for you 24/7.
Customer Reviews
98% Recommend
98% of reviewersrecommend this product
You've Already Reviewed This Item
923 Reviews
Showing 1-10 of 923 Reviews
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THE BEST CAT FOOD EVER IF YOUR CAT HAS POOPING PROBLEMS!
By ansmith on Apr 2, 2021
I was using another prescription brand the vet recommended along with a over the counter laxative. But my cat still was not able to get a complete poop. Switch over to this because if the reviews and I am so happy I did. It is the best I have been feeding for about 3 weeks without the over the counter laxative and she is pooping every day compared every other day with the other brand. And the poop are not hard nuggets they're normal poops. Would recommended to anyone who has a cat with mega colon problems. I am so happy I made the switch!
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Thank you for very quick delivery on prescription item
By Muttsrbest on Mar 15, 2021
Just want to say that I really appreciate you guys. My kitty gets very constipated but one piece of helping him stay regular is his Royal Canin Fiber response dry food. I’d let him get low and went to a vet close to my house . They were out and gave me a different brand that was “the same thing”. Kitty didn’t like it and it was making his tummy hurt (I know this because I know my cat real well, for those wondering how I knew his stomach hurt). We were about to go out of town for a week and nobody around home had any of his food. I took a chance and ordered two bags from you guys. I knew you’d have to verify the prescription and was just praying it would arrive before we left. Well, few Just want to say that I really appreciate you guys. My kitty gets very constipated but one piece of helping him stay regular is his Royal Canin Fiber response dry food. I’d let him get low and went to a vet close to my house . They were out and gave me a different brand that was “the same thing”. Kitty didn’t like it and it was making his tummy hurt (I know this because I know my cat real well, for those wondering how I knew his stomach hurt). We were about to go out of town for a week and nobody around home had any of his food. I took a chance and ordered two bags from you guys. I knew you’d have to verify the prescription and was just praying it would arrive before we left. Well, few days later, it appears on the front porch!! I have to mix it with his laxative and I was grateful to have it to fix up for him before we left. Our sitter could have handled it I’m sure but I know exactly how he likes it and was thankful to be able to do that for him myself. She commented that he only ate out of the one big bowl, even though I’d left him 3 huge bowls of food. I said, yep, that’s his food he likes! … more
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Fiber Response diet
By Chelsea on Mar 4, 2021
I have an 11 month old kitten who has mega colon and has been chronically constipated since he came to me at 6 weeks old. He’s also got a misshapen pelvis which doesn’t help the situation. We tried prescription medications, miralax, daily suppositories and still had to do enemas every other week. He was having a hard time passing stool, the texture was also very clay like. Once he turned 10 months old we started him on this food and while he still has to has the prescription medication, miralax and suppositories, the amount, frequency and consistency of his stool has changed ten fold. We were worried we would have to consider surgery to help this, which a positive outcome wasn’t even guaranteed I have an 11 month old kitten who has mega colon and has been chronically constipated since he came to me at 6 weeks old. He’s also got a misshapen pelvis which doesn’t help the situation. We tried prescription medications, miralax, daily suppositories and still had to do enemas every other week. He was having a hard time passing stool, the texture was also very clay like. Once he turned 10 months old we started him on this food and while he still has to has the prescription medication, miralax and suppositories, the amount, frequency and consistency of his stool has changed ten fold. We were worried we would have to consider surgery to help this, which a positive outcome wasn’t even guaranteed. Starting this food has been a blessing for us and him. I do wish they made a wet food option in the fiber response line but it’s still a miracle food and highly recommend this to anyone with cats with GI issues. I work at an animal hospital so I made sure that all options were explored to assist this issue when he was very small and we explored all options (prescriptions, over the counter medications, suppositories, etc) and were starting to lose hope that we’d be able to help my little guy. Who knew that starting a new diet would completely change his quality of life! … more
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Miracle worker for constipated cats!
By Alex on Apr 12, 2021
My cat started getting constipated and absolutely nothing was working. Not even laxatives! Now she takes dumps the size of a dog's! The only downside is the price, but clearly it's been worth the money. I've started mixing this with another dry food to help make each bag last longer a 2 to 1 ratio of the royal canin to the other food. Still does the job!
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Royal Canin Gastrointestinal dry food saved our little boy Chessie
By John on Feb 21, 2021
Just wanted to express our appreciation to Royal Canin Gastrointestinal dry cat foods and Chewy for helping to save our little boy Chessie. Chessie has for many years suffered with Mega Colon disease and we have done everything possible for him to keep his colon and try to help him live a normal life. Recently, he was so packed inside we were considering having him put down, but thankfully our Veterinarian Dr. Costello suggested we clean Chessie out real good and start all over with this Royal Canin diet. In just about a week the results have been incredible. Chessie's trouble has been improved 100% and his life is much happier now. The staff at Town and Country have been wonderful to Chessie Just wanted to express our appreciation to Royal Canin Gastrointestinal dry cat foods and Chewy for helping to save our little boy Chessie. Chessie has for many years suffered with Mega Colon disease and we have done everything possible for him to keep his colon and try to help him live a normal life. Recently, he was so packed inside we were considering having him put down, but thankfully our Veterinarian Dr. Costello suggested we clean Chessie out real good and start all over with this Royal Canin diet. In just about a week the results have been incredible. Chessie's trouble has been improved 100% and his life is much happier now. The staff at Town and Country have been wonderful to Chessie and Dr. Costello's suggestion to try this food has been a real life saver for all of us, especially Chessie. My wife and I cannot begin to thank Dr.Costello enough for recommending this diet for Chessie and we hope Chessie will live many more happy years because of this food. We would also like to thank Royal Canin and Chewy for helping us to help our little boy Chessie. … more
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Thank you !!!!!!!!!
By Juju on Mar 13, 2021
Thank you Royal Canin !!!!! And all of you that wrote reviews been losing my mind for months my cat has bowel issues to large to pass blood only going every 3 days with medicine a lot of money spent at vets .So I decided to educate myself and ended up at chewy looking up this food read all the reviews and didn't feel alone anymore and thought just maybe this might help.wow its working my cat and I are so happy and grateful. Thank you again for such a great product and everyone who shared their stories.
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Saved my 21-Year-Old Domestic Shorthair Feline
By Thankful on Feb 28, 2021
I own a 21-year-old spayed feline who lives solely indoors. Despite a heart murmur, a few missing teeth, and arthritis in her front paws, she's in excellent health. However, in January 2021, she began experiencing severe gastrointestinal challenges, attempting to defecate in her litter box without any results. Twice, I had to take her to my local veterinary ER to have hardened stool removed from her colon via enema and manual extraction. During our second trip to the ER, the veterinarian recommended feeding her a higher-fiber diet (our cat was previously fed a different type of Royal Canin food), and, specifically, recommended this type, Royal Canin Gastrointestinal Fiber Response, Dry Cat Food I own a 21-year-old spayed feline who lives solely indoors. Despite a heart murmur, a few missing teeth, and arthritis in her front paws, she's in excellent health. However, in January 2021, she began experiencing severe gastrointestinal challenges, attempting to defecate in her litter box without any results. Twice, I had to take her to my local veterinary ER to have hardened stool removed from her colon via enema and manual extraction. During our second trip to the ER, the veterinarian recommended feeding her a higher-fiber diet (our cat was previously fed a different type of Royal Canin food), and, specifically, recommended this type, Royal Canin Gastrointestinal Fiber Response, Dry Cat Food. Since feeding this new type of food, our cat has responded very well. She loves the flavor of the kibble and is once again able to have a bowel movement with ease. What's more is that she seems more energetic and happy. I highly recommend Royal Canin Gastrointestinal Fiber Response, Dry Cat Food if your cat is experiencing similar defecation challenges. Without making this switch, I fear that my cat would have never recovered from her gastrointestinal problem. Now, I'm hoping that in the near-future, Royal Canin makes a soft food version. Overall, though, Royal Canin Gastrointestinal Fiber Response, Dry Cat Food deserves the highest praise, and I'm thankful that Chewy provides distribution of this specific food, especially in the midst of a pandemic. … more
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Stops hairballs
By Ssandra74 on Feb 24, 2021
My vet put my Maine Coon cats on this food soon after they turned 1 and started getting hairballs. We mix half Fiber Response with half regular Maine Coon food. It totally stopped the hairballs. When we tried feeding 100% Fiber Response, they had diarrhea, hence mixing 1/2 and 1/2. With the pandemic, the vet clinic has routinely been out of stock of this food, and their supplier has it listed on back order and can never give an in-stock date. So I turned to Chewy and had no problem getting the order filled within a day and shipped immediately!
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Worth the money!
By Becky on Feb 19, 2021
On my third emergency vet visit to deal with my cat's chronic constipation, the vet recommended a change in diet and suggested this specific brand. Even though it is dry food, the doctor mentioned having great success with other cats having the same problem as my kitty. I noticed a difference in 24 hours of my cat eating this food. He goes to the bathroom regularly in his litter box, isn't struggling when he does, and drinks more water. This prescription food is more expensive, but absolutely worth every penny!
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Works great for older kitty with osteoarthritic spine
By OHKittyMom on Mar 29, 2021
This diet helps my older cat that came from a shelter. Her spine is arched and she has osteoarthritis. Before starting the diet, she was constipated. I have another, healthy 1 year old kitty that eats it too and he is doing great. Works for multi-cat household.