Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Cat Food
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Hill’s Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Cat Food is thoughtfully developed for GI care by Hill’s nutritionists and veterinarians. It’s contains a blend of prebiotics to promote healthy, regular stool and support your kitty’s digestive health. It also helps promote a urinary environment that’s difficult for struvite and calcium oxalate crystals to develop. This wet dry food is made in the USA with trusted global ingredients. Talk to your veterinarian to see if this Hill’s Prescription Diet recipe is right for your furry friend!
Key Benefits- Specially crafted by Hill’s nutritionists and vets to support your pet’s digestive health.
- Promotes regular, healthy stool.
- Contains ActiveBiome+ ingredient technology to help activate beneficial gut bacteria and support a healthy GI microbiome balance.
- Features a proprietary blend of prebiotic fibers to promote regular bowel movements and help balance digestion.
- Contains generous levels of omega-3 fatty acids, DHA and EPA.
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 Number159278
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Weight8.5 pounds
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BrandHill's
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LifestageAdult
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Food FormDry Food
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Special DietVeterinary Diet
Chicken, Brewers Rice, Chicken Fat, Pea Protein, Wheat Gluten, Whole Grain Corn, Corn Gluten Meal, Ground Pecan Shells, Chicken Meal, Cracked Pearled Barley, Whole Grain Oats, Dried Beet Pulp, Chicken Liver Flavor, Pea Fiber, Flaxseed, Dried Citrus Pulp, Fish Oil, Lactic Acid, L-Lysine, Choline Chloride, Potassium Chloride, Pumpkin, Pressed Cranberries, Fructooligosaccharides (FOS), DL-Methionine, Taurine, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Psyllium Seed Husk, Calcium Sulfate, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Iodized Salt, Natural Flavors, Beta-Carotene.
Caloric Content427 kcal/kg
Guaranteed Analysis: | |
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Crude Protein | 31.0% min |
Crude Fat | 15.0% min |
Crude Fiber | 7.0% max |
Moisture | 9.0% max |
Eicosapentaenoic Acid (EPA) | 0.15% min |
Docosahexaenoic Acid (DHA) | 0.1% min |
Omega-3 Fatty Acids | 0.7% min |
Total Dietary Fiber | 9.0% min |
Weight of Cat | Daily Feeding (cups) |
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6 lbs | 3/8 |
8 lbs | 1/2 |
10 lbs | 5/8 |
12 lbs | 2/3 |
14 lbs | 3/4 |
16 lbs | 7/8 |
18 lbs | 1 |
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.


Groundbreaking Nutrition for Digestive Health
Hill's Gastrointestinal Biome cat food was formulated using a different approach to digestive care. These recipes help your cat's stomach break down food more efficiently using a specific blend of active fibers. This blend, ActivBiome+, can help promote healthier stool and improve regularity. Other beneficial ingredients may help promote a healthy urinary system, too—they call it S+OX Shield.
Clinical Nutrition
With Hill's, it's not just high-quality ingredients that count. Their focus is on the proper balance of nutrients in every recipe. So, Hill's designed food to help pets with health conditions, providing the right nutrients to support their health. Hill's alliance with veterinarians puts them in a position to find a nutrition recommendation for your pet, no matter what health issue he's facing.
Formulated by Veterinarians
Hill's Prescription Diet started with a veterinarian's belief that some health issues could be managed through nutrition. What began as a theory has now been proven through extensive research by a team of over 220 vets, PhD nutritionists and food scientists. The results can be seen in Hill's Prescription Diet therapeutic pet foods.
Meeting the Highest Standards
Providing a food that delivers exactly what it says it does is Hill's number one priority. In fact, they perform over five million safety and quality checks every year. They've established relationships with trusted suppliers and will only accept ingredients that meet stringent standards.

The Taste Factor
You might know that Hill's Prescription Diet is good for your pet, but she's only concerned with the taste. Even though they place a heavy emphasis on nutrition, Hill's hasn't forgotten about palatability. Savory ingredients are combined to produce foods with enticing aromas, textures, and shapes that your pet can't resist.
How ActivBiome Can Help Your Cat
How it Works... |
How it Helps... |
Breakthrough ActivBiome+ ingredient technology |
Promotes regular bowel movements |
High levels of Omega-3 fatty acids (DHA & EPA) |
Help to balance digestive function |
Optimally balanced soluble and insoluble fibers |
Supports the growth of beneficial gut bacteria to maintain digestive health |
About Hill's Prescription Diet
Hill's mission is to help enrich and lengthen the special relationships between people and their pet. Their Prescription Diet product line delivers clinically proven nutrition that supports common pet health concerns, from digestive and urinary health to aging and weight management.

Customer Reviews
94% Recommend
94% of reviewersrecommend this product
You've Already Reviewed This Item
110 Reviews
Showing 1-10 of 110 Reviews
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Chewy Goes the Extra Mile
By Friday on Jan 11, 2021
One of our cats has severe bouts of constipation which require vet visits and a...messy procedure. The vet prescribed this kibble but didn't provide refills. When I attempted to reorder it I couldn't. But the good folks at Chewy called my vet and got authorization. That's the kind of customer service I truly appreciate but no longer expect from many businesses. My thanks. And my cat, Friday, thanks you, too!
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Well that was easy
By sqwishie on Dec 21, 2020
After spending a couple thousand dollars on diagnostics, medications, and other prescription diets to no avail. This food worked so ridiculously well I was peeved I didn't learn about it sooner. I was recommended it by a friend and you know what. No more bloody diarrhea over night. I even went back to the old food eventually to see if it was a fluke, the diarrhea came back that night. My only gripe with it. My cat doesn't like to eat it. He liked it at first but quickly started to leave lots behind trying to steal from other cats food bowls. He's never before been a picky cat. Otherwise pretty amazing product.
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When it’s good, it’s incredible, but Inconsistency in product
By CatMama on Dec 16, 2020
There is a bit of inconsistency in this product. Some packages seem to have slightly larger kibbles and more flavoring on them and other packages have less flavoring coating and smaller kibbles. When my cat gets the packages with large kibbles and more flavoring, she loves it and eagerly eats the food and it works incredibly for curing her chronic diarrhea. When we are sent packages with smaller kibbles and less flavoring coating, my cat won’t eat them unless I put Purina’s fortiflora on it. I wish they had better consistency in their product.
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Aries new diet
By Linda on Jan 6, 2021
My kitty (Aries)has digestive problems. He has been fed Hills Dry Formula for 10 days . At first we had to mix with his regular food . But he has now transitioned to just Hills and I see an improvement in his digestion and his coat is Shinier !!
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Cat has medical issue
By Hillary on Dec 29, 2020
I am very grateful that this prescription food has put weight back on my cat. It has also altered her behavior. Her previous food is an excellent food but she was starving, (due to a medical issue). I donated her former food to a feline rescue as it wasn’t working for her.
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My boys' favorite!
By Nicole on Jan 20, 2021
When we adopted our two fur buckets, Finn had really bad digestive problems. Our vet recommended this food and they've been happy and healthy ever since, they love it! Thank you chewy!!
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Really great!
By ilovemycat on Nov 23, 2020
My cat had been having some really bad GI symptoms (vomiting more than normal, loose stool..) and after talking to my vet, they recommended this diet. He has had some gallbladder issues as well too but this cat food has saved me. It's really expensive but I'm probably saving more now. Vet visits are expensive and so are scans, but this food has allowed my cat to be able to stay healthy and stay away from the vet.
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Finally! One food for multi cat house.
By SusanEm on Nov 2, 2020
Hills Biome works. Period. My chronic diarrhea cat has shown more improvement on Biome than she did with metro and a probiotic for weeks. My fat cats have cleaner bums. My boys, one having had PU surgery for UO and the other on c/d since being unblocked can eat this due to the SO/OX shield. I currently have two rescued sisters who developed diarrhea, smelly, bubbly diarrhea despite deworming. My vet is closed for 2 weeks due to COVID . With no access to the usual battery of medications, I decided to hardcore switch the kittens to Biome. Immediate improvement in stools and back to normal in less than a week. Now, I’m a food snob. I read ingredients. I cringe when I read some of the Hills Biome works. Period. My chronic diarrhea cat has shown more improvement on Biome than she did with metro and a probiotic for weeks. My fat cats have cleaner bums. My boys, one having had PU surgery for UO and the other on c/d since being unblocked can eat this due to the SO/OX shield. I currently have two rescued sisters who developed diarrhea, smelly, bubbly diarrhea despite deworming. My vet is closed for 2 weeks due to COVID . With no access to the usual battery of medications, I decided to hardcore switch the kittens to Biome. Immediate improvement in stools and back to normal in less than a week. Now, I’m a food snob. I read ingredients. I cringe when I read some of the stuff on the label. Here’s the deal though, this isn’t about what I *think* should be on a label. This is about the overall well-being of the cat. In the case of my chronic diarrhea girl, I put the excellent label, top ingredients, grain free, proprietary probiotic brand back in the dish so I could feed the last of the Biome bag to the rescue girls. Liquid, blowout diarrhea ensued. Back on Biome and already forming pencil thin stools after a day. At some point, we all need to stop buying into opinions on diets and ingredients and just ask the cat! My cat(s) say Biome!!! Now if I could just get Hills to increase the bag sizes!!!! (Going to try the non Rx Hills Perfect Digestion for my normal cats who don’t have medical issues nor dietary concerns.) … more
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MIRACLE FOOD FOR CHRONIC DIARRHEA
By mooncat on Oct 30, 2020
My cat is 2.5 years old, she had chronic diarrhea from the day I brought her home as a kitten. I took her to so many different vets. Tried metronidazole, hydrolyzed protein, prednisone... nothing worked. Spent lots of money on ultrasounds, stool PCR, labs, etc... to be told it may be something like IBD but they weren't sure. I decided to try this food after my own research because of the glowing reviews. She has had NORMAL poop ever since. I cannot believe it. I am so grateful!! I just wish I had found it sooner. Thank you to the people who created this MIRACLE food.
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Happy adult cat
By Mamaroneck1 on Jan 9, 2021
Less accidents, notable improvement with her stool. we now get tootsie rolls instead of puddles and she seems more comfortable. Wish the wet food was available!