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Hill's Science Diet Science Diet
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Hill's Prescription Diet Prescription Diet
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Kitten Kitten
Adult 1+ Adult 1+
<br>Adult 7+

Adult 7+
Adult 11+ Adult 11+

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Adult 1+ Adult 1+
<br>Adult 7+

Adult 7+
<br>Adult 11+

Adult 11+

Grain Free
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By Health Condition

i/d® Feline - Dry

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Hill's® Prescription Diet®
i/d® Feline

Digestive Care

Dietary indiscretion, food allergies, or lack of digestive enzymes can affect your cat's digestive health. Efficient digestion is essential for your cat to be able to build and repair tissues and obtain energy, and for these reasons it is important to feed a food that is formulated to help support digestive health.

Hill's nutritionists & veterinarians developed Prescription Diet® i/d® clinical nutrition especially formulated to support your cat's digestive health. In fact, i/d is clinically proven nutrition that helps improve digestion & stool quality.

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100% Guarantee We're confident your pet will enjoy Hill's® Prescription Diet® foods. We're so confident that we offer a 100% money-back guarantee.*

Prescription Diet Foods are made in our own U.S. facilities with ingredients from North America, Europe, and New Zealand, which exceed industry standards for purity and nutrient content.

* 100% Satisfaction Guarantee - if you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement.

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Key Benefits

How It Helps

  • Replaces lost nutrients
  • Ensures easy nutritent absorption
  • Supports a healthy immune system
  • Meets the special nutritional needs of kittens

How It Works

  • Highly digestible
  • High in electrolytes & B vitamins
  • Optimal blend of soluble & insoluble fiber
  • Enriched with omega-3 fatty acids
  • Clinically proven antioxidants

Additional Info

Hill's® Prescription Diet® i/d® Feline provides all the nutrition your cat needs. Please consult your veterinarian for further information on how our Prescription Diet® foods can help your cat to continue to enjoy a happy and active life.

Feeding Guide

Daily Feeding Guide:

Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian. For best results & safety practices:

  • Gradually transition to your pet's new food over a 7 day period.
  • Exclusively feed the recommended Prescription Diet® dry food, wet food, & treats
  • Keep fresh water available at all times.
  • Split the recommended daily amount into smaller portions and feed throughout the day.
  • Have your veterinarian monitor your pet's condition.
  • To prevent suffocation, keep this plastic bag out of the reach of pets and children.

Feeding transition

Adult maintenance

Weight of CatAmount per Day
6 lb (2,7 kg) 3/8 cup (45 g)
8 lb (3,6 kg) 1/2 cup (65 g)
10 lb (4,5 kg) 1/2 cup (65 g)
12 lb (5,4 kg) 5/8 cup (80 g)
14 lb (6,4 kg) 2/3 cup (85 g)
16 lb (7,3 kg) 3/4 cup (95 g)
18 lb (8,2 kg) 7/8 cup (110 g)


Weight of CatGrowth less than 4 monthsGrowth 4 to 6 monthsGrowth 7 to 12 months
1 lb (0,5 kg) 1/4 cup (30 g)
2 lb (0,9 kg) 3/8 cup (45 g) 1/3 cup (40 g)
3 lb (1,4 kg) 1/2 cup (65 g) 1/2 cup (65 g)
4 lb (1,8 kg) 2/3 cup (85 g) 1/2 cup (65 g)
6 lb (2,7 kg) 7/8 cup (110 g) 3/4 cup (95 g) 5/8 cup (80 g)
8 lb (3,6 kg) 7/8 cup (110 g) 3/4 cup (95 g)
10 lb (4,5 kg) 7/8 cup (110 g)
12 lb (5,4 kg) 1 cup (125 g)
Use only as directed by your veterinarian.
Animal feeding tests using AAFCO procedures substantiate that Prescription Diet® i/d® Feline provides complete and balanced nutrition for maintenance of adult cats and growing kittens.

Average Nutrient and Caloric Content

Dry 3993 kcal/kg (498 kcal/cup)

Dry Matter1
Carbohydrate (NFE)29.0
Crude Fiber2.5
Soluble Fiber0.6
Insoluble Fiber4.4


1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles of products with differing moisture contents.
An eight fluid oz. measuring cup of i/d® Feline contains 4.4 oz. by weight.


Chicken By-Product Meal, Brewers Rice, Corn Gluten Meal, Whole Grain Corn, Pork Fat, Egg Product, Pea Protein, Pea Fiber, Chicken Liver Flavor, Lactic Acid, Potassium Chloride, Calcium Sulfate, Choline Chloride, Dried Beet Pulp, DL-Methionine, Iodized Salt, 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), Taurine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene

i/d® Feline - Dry id 052742462905,052742869407,052742462912,052742869414 4629,8694

Rated 4.6 out of 5 by 75 reviewers.
Rated 4 out of 5 by Appears to not aggravate GI I/D was initially recommended prior to my cat having chest wall resection surgery - and now that there are GI issues. Her weight has been stable throughout the year and what is important she will eat it - and keep eating it. While I know she would prefer other foods - it doesn't aggravate her GI tract - and when I stick with giving her I/D - she ends up with formed, healthy stool and no vomiting. I wish it had more fiber - not sure if that is possible. I also wish there was more than one variety - chicken - and maybe turkey or lamb - so she wouldn't get bored with it so easily. Overall, I am glad that I/D is out there - and really glad for the new seal on the bags! September 21, 2015
Rated 3 out of 5 by I/D Prescription Wet & Dry Cat Food My Cats eat the dry and seem to like it. No more Diarrhea from my Male Cat. So it works. Female put on weight since she is eating this as well. She is Overweight. The wet must not taste very good. Both cats don't like & I Have to mix it with other canned food. If you leave the food sitting for a couple of hours, it turns rock hard & looks like it has been sitting out for days. July 31, 2014
Rated 4 out of 5 by Works great for cat with sensitive GI areas! My long hair domestic cat...actually super long hair must have some Persian in him, had very bad furballs that he ended up having surgery to remove several that were hard as rocks and stuck in his GI tract. Afterwards the vet put him on Prescription I/D. I didn't think this would be a forever deal!! But anytime I take him off of it or mix it with other dry food, he ends up rushed back into the vet for at least an overnight stay while he gets re-hydrated and better. After thousands of dollars in vet fees, he's permanently on Prescription i/d. Only issue I have with the Prescription brand is that it is only sold at vets. Couldn't we have it at specialty pet food stores with a prescription or similar? I must have spend over $2K just on pet food in the last 6 to 8 years. Now 14 years old, our "free kitten" now up to the $6K free cat! I think he's done pretty good for such a sick guy in the first place! August 15, 2013
Rated 4 out of 5 by Needs it but does not like it My cat has a sensitive stomach ever since I found him as a kitten under my neighbors porch. I tried feeding him regular cat food but he kept throwing up. I took him to the vet and was given a prescription for Hill's® Prescription Diet® i/d® Feline Gastrointestinal Health. He does not throw up any more but he does not like the taste. I have to mix the Hill's® Prescription Diet® i/d® Feline Gastrointestinal Health with other Hill's dry or wet cat food so that he will eat the Hill's® Prescription Diet® i/d® Feline Gastrointestinal Health. I wish Hill's would change the formula of Hill's® Prescription Diet® i/d® Feline Gastrointestinal Health so that cats would like the taste. June 30, 2013
Rated 5 out of 5 by I/D formula is helping Sherman my outdoor cat! I have 5 cats outside and 5 inside. My inside cats eat W/D and are doing fine. However, one of my outdoor cats, Sherman has been having stomach issues. My vet recommended I/D dry/wet. He doesn't care for the wet, but seemed to have taken to the dry for over a month. He fortunately has gained 1/2lb from the 4lbs he had lost. I hope he continues to eat this food as its formulated for cats with IBS, gastic problems. I might switch all 5 outdoor cats to this food this way, he won't be tempted to eat their food, plus most of them are older cats so the I/D will be good for them as well to eliminate vomiting, etc. Thanks again Hills for keeping my cats healthy! July 8, 2014
Rated 5 out of 5 by works wonderfully on my cats' sensitive stomach My extremely long haired cat ended up having surgery to remove 3/4 large hard hairballs in his intestinal tract that were bigger than $1 coins and hard as rocks. He couldn't even keep water down. After the surgery the vet recommended Prescription I/D as his regular food. It works wonderfully and even when he gets large hairballs he's able to bring them up and they don't get stuck inside him. I've tried to take him off several times and each time he's ended up back at the vet's usually at least overnight. We stick with the food and he's fine. My other short haired cat likes the flavour too! Only downside is it is expensive and I wish the price would come down some as it's hard on a fixed income to buy. September 8, 2013
Rated 5 out of 5 by Saved my cat's life My 12 year old cat, Mr. Bear, had severe GI issues. He went from a 13 pound cat to a 7 pound cat. I thought he was going to die. But my vet recommended putting him on i/d. I had tried him on other sensitive stomach foods that were over the counter, so I was skeptical. But i/d was the cure! All of his vomiting and diarrhea stopped. He gained back all of his weight. And lived another 7 wonderful years. I couldn't be happier with this product or will Hill's. December 19, 2013
Rated 5 out of 5 by Works well for my cat. My rescue cat had a pelvic injury that requires him to have soft stools to prevent constipation. This prescription Hills Diet along with a medication seems to have him healthy and happy. I wish it were the same price as their regular non prescrition food found in fine pet stores, but at least Hills offers coupons from time to time to help out the cost. Thank you, Hills! February 19, 2014
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