Feeding Cats with Feline Leukemia: Four Labels, Not a Cure (2026)

Royal Canin’s US page calls this a high-energy wet critical-care diet for canine and feline patients, including puppies and kittens, and a highly digestible complete and balanced food for cats and dogs when a veterinarian directs it. The veterinary formula is sold through select retailers and clinics. The page says to consult a veterinarian, or to use a trusted partner if you have a prescription. It does not say every checkout will ask for that prescription. Benefits named on the page are high energy density in a reduced volume, a texture for syringe and feeding-tube use, and a high protein level to help maintain muscle during hospitalization and convalescence. This page does not give a tube size, a rate, or a how-to. The first ingredients are water sufficient for processing, chicken, and chicken liver.

Guaranteed analysis on that US page: crude protein 9.4% minimum, crude fat 5.2% minimum, crude fiber 3.1% maximum, moisture 78.9% maximum. Calorie content is 1025 kcal ME/kg and 149 kcal ME/can, as fed, calculated. The nutritional adequacy statement says the mousse is formulated to meet AAFCO Cat and Dog Food Nutrient Profiles for growth and maintenance, including growth of large-size dogs of 70 lb or more as adults. The same page’s heading still says wet food for dog. Leave that slip visible. A Spanish rendering of this formula prints fiber at 2.0% maximum. A UK page prints protein 12.7%, fat 6.4%, and moisture 73%, plus a gram table. Those figures stay on those pages. An older index line of 986 kcal/kg and 143 kcal/can was not on the US page opened for this rebuild. Do not paste Hill’s 6-month limit onto this can. The US page opened here did not print a feeding chart in grams.

Hill’s US page describes a/d with Chicken as canned nutritional support for dogs and cats recovering from surgery, illness, or injury. The size is 5.5 oz. Ingredients begin with turkey giblets, water, pork liver, and chicken, then corn flour and spray-dried pork stock. Feeding tips say individual needs vary with the medical condition, and to use the food only as directed by a veterinarian. The cat table is in 5.5 oz (156 g) cans. At the row printed 6 (2,7), cage rest is 3/4 can, the surgery, sepsis, cancer, trauma, fever, and feline hepatic lipidosis schedule is 1 can, and severe burn, injury, or head trauma is 1 1/4 can. At 8 lb the same three columns are 1, 1, and 1 1/2. The rest of the cat rows stay on the Hill’s page. A milliliter table on that page is labeled weight of animal, not cat. An 8 lb line of 146, 175, and 234 ml is that table. It is not a second reading of the cat-can row. A dog-can table is also on the page. Do not feed a dog row to a cat.

The page says a/d is intended for intermittent or supplemental feeding only, and is not recommended for long-term feeding of more than 6 months. A site block about transitioning foods over 7 days does not erase that cap. Calorie content is 1262 kcal/kg and 196 kcal/can. The nutrient table is dry matter: protein 44%, fat 31%, carbohydrate 15.3%, crude fiber 0.1%. Hill’s defines dry matter as the nutrient after moisture is removed. It is not the percentage in the can. The page opened for this rebuild did not print an as-fed protein or fat guarantee and did not print an AAFCO statement. Do not borrow one. A retailer card that prints about 180 kcal per 5.5 oz can, and an as-fed line near 8.5% protein and 5.2% fat, is a different panel. A New Zealand card near 1151 kcal/kg stays off this 196 kcal can. A listing that starts with water and names pork protein isolate is not the ingredient order on the US page opened here. Hill’s says the texture is smooth, soft, moist, and thixotropic, and that stirring makes it more liquid, with feeding by hand, bowl, spoon, syringe, or tube. High digestible protein and fat, and the antioxidant sentence, are Hill’s claims. They are not a result from this page.

Purina’s US cat page for FortiFlora describes a probiotic powder for the dietary management of diarrhea, for kittens and adult cats. The feeding guide prints active ingredients per 1 g sachet: Enterococcus faecium SF68 at 1×10^8 CFU, and taurine 5 mg. Inactive ingredients are liver flavor and yeast. The manufacturer line is Nestle Purina PetCare Company, St. Louis, MO 63164 USA. Directions say for use in cats only, recommended to assist the management of cats with diarrhea, and administer one packet daily or as directed by a veterinarian. The product description says a microencapsulation process is meant to help the organisms survive until the intestinal tract, and that the supplement contains antioxidants to support the immune system. That antioxidant sentence is Purina’s. It is not a claim that the powder treats feline leukemia. The sachet is sprinkled on the regular food. It does not replace the food.

The shop product-facts extract adds code A-9302, says the condition should stop the product if it worsens or does not improve, says safe use in pregnant animals or animals intended for breeding has not been proven, recommends a veterinary examination first, and says it is not for human consumption. A Canada card prints animal digest and brewer’s yeast, 3.663 kcal/g, and 3.7 kcal per sachet, with a guaranteed analysis near 43% protein. Those lines stay in Canada. A UK veterinary sheet prints a higher CFU floor and a two-hour gap from antibiotics. That sheet stays in the UK. A 2026 diarrhea-response kit pairs a kaolin-and-pectin stick with a sachet whose extract names Enterococcus lactis SF68, not faecium. FortiFlora Pro is a different 1.5 g packet with psyllium and 7.5 mg of taurine. A dog packet’s 4 kcal line stays on the dog packet. This card keeps faecium, 1×10^8 CFU, 5 mg of taurine, liver flavor, and yeast until the sachet in hand says otherwise.

Virbac’s veterinary page calls Rebound a palatable liquid for dogs and cats, meant to help promote eating and drinking during recovery. The cat bottle is 5.1 oz. The same bullet says it lasts about 3 to 5 days depending on the size of the patient, can be used in hospital or at home, and is stable in the refrigerator for 7 days once opened. It says the formulas are specific for dogs and cats, low calorie, and without an age restriction. It may be given with food, with water, on its own, or syringe fed. The page then says Rebound is not a critical care liquid diet. It is a nutritional supplement for intermittent or supplemental feeding only. Do not move Royal Canin’s 149 kcal can, or Hill’s 196 kcal can, onto this bottle. Do not treat low calorie as a number the page did not print.

Ingredients begin with water, spray-dried chicken liver, poultry broth, and poultry fat. Guaranteed analysis per 30 ml on that page: crude protein 2.5% minimum, crude fat 2.0% minimum, crude fiber 0.5% maximum, moisture 88% maximum, arginine 0.14% minimum, lysine 0.1% minimum, methionine 0.05% minimum, phenylalanine 0.08% minimum, linoleic acid 0.3% minimum, alpha-linolenic acid under 0.1%, EPA under 0.1%, DHA under 0.1%, calcium 0.2% minimum, and taurine 0.1% minimum. The asterisks beside glutamine, biotin, and taurine say those nutrients are not recognized as essential by the AAFCO Dog Food Nutrient Profiles. That is the dog-profile note printed on the cat page. It is not a cat-profile sentence, and it is not a reason to delete the taurine line. A drug-reference reprint that lists fat at 1.9% minimum and 2.5% maximum, moisture at 89%, and 13.8 kcal per 30 ml was not the panel on the Virbac page opened here. An owner brochure that lists 24 ml, 36 ml, and 48 ml by weight band, and a label line of 3 ml per lb, stay off this card for the same reason. The opened page did not print them.