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Hill's Science Diet Science Diet
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Adult 1+ Adult 1+
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a/d® Canine/Feline Critical Care - Canned

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Hill's® Prescription Diet®
a/d® Canine/Feline Critical Care

For the nutritional support of pets recovering from serious illness, accident and surgery

Cats and dogs can undergo significant metabolic changes when recovering from a serious illness, injury or surgery. During these stressful conditions the body is challenged to maintain strong natural defenses and spare lean body mass, which makes it is even more important to feed the right food. Cats and dogs need extra energy and nutrients, in an appetizing form, to encourage the recovery process.

At Hill's, nutritionists and veterinarians developed clinical nutrition especially formulated to help dogs and cats in recovering process

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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, Australia 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

Prescription Diet® a/d® is formulated with the following benefits:
  • Highly digestible ingredients and extra calories to help during recovery
  • Highly digestible proteins to help wound and tissue healing, preserving lean body mass and promoting a healthy immune system
  • Increased level of potassium to help avoid depletion
  • Highly palatability with a soft consistency aids acceptance by inappetant pets and gives flexibility in feeding -- by bowl, spoon, syringe or feeding tube

Additional Info

Hill's® Prescription Diet® a/d® Canine is a complete and balanced food that provides all the nutrition dogs and cats need. Please consult your veterinarian for further information on how our Prescription Diet® foods can help your pet to continue to enjoy a happy and active life.

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

100% Guaranteed Great Taste. We're confident your pet will enjoy Hill's Prescription Diet foods. In fact, we're so confident that we offer a money-back guarantee. Hill's guarantees Prescription Diet pet foods for quality, consistency and taste, If you are not completely satisfied with your purchase for these reasons, return the unused portion to your veterinarian for a full refund or replacement.

Feeding Guide

Daily Feeding Guide:

Individual requirements may vary depending on pre-existing nutritional status and medical condition. In patients where normal G.I. function has been compromised by anorexia, a three-day transitional feeding strategy may be necessary.
Day One 1/3 of daily caloric intake with 2/3 water dilution
Day Two 2/3 of daily caloric intake with 1/3 water dilution
Day Three Entire daily caloric intake
Select a feeding schedule based on the following patient criteria:
Schedule 1 Cage Rest
Schedule 2 Surgery, Sepsis, Cancer, Trauma, Fever, Feline Hepatic Lipidosis
Schedule 3 Severe Burn, Injury or Head Trauma

  • The following daily intakes are intended as a guide and should be adjusted as needed to achieve or maintain optimum body weight.
  • Divide into three to six equal daily feedings to minimize gastrointestinal side effects. (1 can = 150 ml.)

Feeding transition

- using 5.5 oz (156 g) can

Weight of AnimalSchedule 1
in Milliliters
Schedule 2
in Milliliters
Schedule 3
in Milliliters
5 lb (2,3 kg)117140187
8 lb (3,6 kg)166200266
10 lb (4,5 kg)197236315
15 lb (6,8 kg)267320427
20 lb (9,1 kg)331397529
30 lb (14 kg)448538717
40 lb (18 kg)556668890
50 lb (23 kg)6587891052
60 lb (27 kg)7549051207
70 lb (32 kg)84710161355
80 lb (36 kg)93611231497
90 lb (41 kg)102212271635
100 lb (45 kg)110613271770
Use only as directed by your veterinarian.

Average Nutrient and Caloric Content

Canned 1151 kcal/kg (180 kcal/5.5 oz (156 g) can)

Dry Matter1
Carbohydrate (NFE)15.4
Crude Fiber1.3
Glutamine / Glutamate5.17
Branched Chain Amino Acid Total6.42
Omega-3 Fatty Acids Total2.46


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.


Water, Pork Liver, Poultry Liver, Chicken, Corn Flour, Pork Protein Isolate, Fish Oil, Chicken Liver Flavor, Calcium Carbonate, Sodium Tripolyphosphate, Guar Gum, Potassium Chloride, Taurine, Choline Chloride, Vitamin E Supplement, Magnesium Oxide, Ascorbic Acid (source of Vitamin C), Zinc Oxide, Ferrous Sulfate, Thiamine Mononitrate, Beta Carotene, Manganous Oxide, Copper Sulfate, Niacin, Calcium Pantothenate, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Riboflavin, Vitamin D3 Supplement, Biotin, Calcium Iodate, Sodium Selenite, Folic Acid.

a/d® Canine/Feline Critical Care - Canned ad 052742567006,052742567013 5670

Hill's® Prescription Diet® a/d® Canine/Feline Critical Care 4.8 5 50 50
Wonderful product We rescued a stay cat who turned out to be a dwarf. He was 3 months old and only weighed half a pound. He is now 5 months old and has gained a pound on this food. The vet recommended it because it is high calorie and he loves the taste. We will continue to feed this while he is growing. Before feeding this food he has a low blood sugar problem so he may not be absorbing all his food. In that case we may have to supplement with this for life. Any way to get a discount? :) December 29, 2013
did it's job my 16yr old toy poodle needed to get back to normal and gain some weight-he's an extremely fussy eater but ate this and it put weight back on him and got him stronger---I hope you'll never have to use this but it's good ( a relief) to know it's there-- October 19, 2013
Saved Hendrix's life!!!!!! Two of our border collie pups out of our current litter came down with coccidia. After taking Hendrix to the vet for a two day stay we found out he was blind. We got him home again only to shortly lose another pup from the same thing. (In the car on the way to emergency sadly enough) Hendrix was doing well for 4 days until he was becoming increasingly more lazy and dehydrated. He went off his food and water and after another trip to the vet they gave us 3 tins of a/d to feed him with the syringe every 2 hours as he was becoming severely underweight. He isn't too much of a fan of the taste but that is possibly due to the syringe. In the last 3 days we have noticed that he has started eating on his own again when we offer him mince, he is taking water better now and is becoming more and more lively. We even got little tail wags tonight and he rolled over for a belly rub. He is now 7 weeks old and if it wasn't for Hills science diet a/d I don't think he would be with us today. Thank you for saving our pups life!!!!! February 13, 2014
Essential Nutrition in a can !!! My 13 year old Siamese was diagnosed with a severe illness and was not eating. A/D critical care has the consistency of baby food with absolutely no "chunks" of any sort that most other canned food has. This food gave her the nutrition she needed during that last critical month of her life after being diagnosed. My other Siamese, now 15 had acquired a taste for the A/D food as a "treat" when her mother was ill. She is healthy, but has a sensitive stomach, and will throw up other foods, so this is still her twice a day treat along with Age Defying senior 11+ dry food. Cats normally do not drink a lot of water, so my other 2 cats (1 1/2yr old girl and 5 months old boy) also get this as a twice a day treat because of the moisture content. Cats (like people) need proper nutrition to help prevent disease and illness. Thank you Science Diet/Prescription Diet for this amazing food. My kids (cats) thank you, also. January 23, 2014
Feline Intestional Lymphoma Rapid weight loss, normal blood levels, my cat was brought for exploratory surgery. She was diagnosed with intestinal lymphoma. It took appetite stimulation medication, to get her to eat, and the Oncologist, suggested my cat be given prednisolone to try to put the lymphoma into remission. Now we had to give my cat food that she could easily digest and not to overtax her intestines. AD was the choice of food, Tasha loved it and became no longer dependent on the stimulation medication for appetite. She is now gaining weight and seemingly in remission. Still not wanting to overtax her intestines,and for the fact the AD is easily absorbed by the body. she is fed multiple times a day, She gives me a hit by siting on her cat tower waiting to eat and gladly I serve her AD on a platter. She is my baby of 9 years and i want to keep her as healthy and as long as i can. If it was not for this food, I do not know where i would be today with Tasha's health. As for the price of the food, her needs r more important to live the best life she can, under the circumstances. The cancer will always be lurking around the corner, she is on prednisolone for life, and as long as she wishes AD will be her diet of choice October 30, 2013
Perfect Food for Critical Care My mom's cat (3 y/o domestic long hair) experienced liver failure and would not/could not eat. She vomited often, had a high fever, and suffered with abdominal pain. She was taken to the vet for treatment and finally recovered enough to come back home. She made it one day, then started experiencing symptoms again. She ended up back in the hospital, and back in liver failure. The poor little thing recuperated again (thankfully), but this time the vet sent her home with this food. She's been doing very well, no symptoms so far, and she eats this like it's the best thing she's ever had in her life! It really is a life saver. If nothing else, keep a can or three on hand...just in case. November 10, 2014
This Product was a life saver for my cat We have been feeding this to my cat. We fed this food to him by hand. We placed it in his mouth. He has gained almost an entire pound in a week and is up and around again. He ate some food on his own today. Hill's is awesome. My cat is my best friend and it means the world to me to see him gaining and being ok again. Thanks Hills!!! November 24, 2012
This food is literally a life saver This is the one food every pet owner should keep on hand in case of an emergency. We've been in rescue/foster for cats since 2010 and this food has literally saved several lives. It's easy to mix it thin enough to draw up into a syringe. We're using it now on a kitten we rescued last week who has a URI and just doesn't want to eat. My daughter went to syringe him last night, and he took one taste and made a dive for the bowl. He's the first cat to actually like the taste. Like the taste or not, we will continue to use it because it's the best chance a kitten has of surviving when it won't eat. I stopped by the vet and got three more cans just in case we need to continue feeding him over the weekend. August 22, 2013
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