Purina Pro Plan Veterinary Diets HA Hydrolyzed Formula Dry Cat Food
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Food sensitive cats can benefit from Purina Pro Plan Veterinary Diets HA Hypoallergenic Feline Formula, a unique cat food that features simple proteins and low-allergen carbohydrates designed to minimize the risk of food allergic reactions. It offers dietary benefits that provide optimal nutrition while meeting your adult cat’s or growing kitten’s special needs.
Key Benefits- Food sensitivities generally appear in pets as gastrointestinal upset and/or intense scratching or itching. It can develop at any life stage, even after eating the same food for years without problems. Purina Pro Plan Veterinary Diets HA has been specifically formulated to help manage food sensitivities with a single protein source.
- The single, hydrolyzed protein source is highly digestible for optimum nutrient absorption. Hydrolyzing means that the protein has been broken down into smaller components, specifically an average molecular weight below 12,200 daltons. Because of this, it's less likely to cause a negative response in your food-sensitive cat.
- A single, low allergen carbohydrate source is included to minimize the risk of food related reactions. It's a source of Medium Chain Triglycerides (MCTs) which don't require energy for absorption, use, or storage.
- Suited for cats that have food allergic gastroenteritis or dermatitis, food intolerance, inflammatory bowel disease, or pancreatitis.
- Made in the USA!
Use only as directed by your veterinarian. Product not intended for ruminants or livestock.
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 Number64952
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Weight8.0 pounds
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BrandPurina
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LifestageAdult
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Food FormDry Food
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Special DietPea-Free, Veterinary Diet, Hydrolyzed Protein
Rice Starch, Hydrolyzed Soy Protein Isolate, Partially Hydrogenated Canola Oil Preserved with Tbhq, Hydrolyzed Chicken Liver, Tricalcium Phosphate, Powdered Cellulose, Corn Oil, Hydrolyzed Chicken, Sodium Bisulfate, Dl-Methionine, Potassium Chloride, Choline Chloride, Tetra Sodium Pyrophosphate, L-Lysine Monohydrochloride, Phosphoric Acid, Salt, Guar Gum, Taurine, Lecithin, Magnesium Oxide, Zinc Sulfate, Ferrous Sulfate, Vitamin E Supplement, Manganese Sulfate, Niacin, Calcium Carbonate, Citric Acid, Vitamin A Supplement, Calcium Pantothenate, Thiamine Mononitrate, Copper Sulfate, BHA (a Preservative), Riboflavin Supplement, Vitamin B-12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D-3 Supplement, Calcium Iodate, Biotin, Menadione Sodium Bisulfite Complex (Source of Vitamin K Activity), Sodium Selenite.
Caloric Content4,032 kcal/kg, 350 kcal/cup
Guaranteed Analysis | |
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Crude Protein | 30.0% min |
Crude Fat | 9.0% min |
Crude Fiber | 4.0% max |
Moisture | 10.0% max |
Ash | 7.75% max |
Calcium | 0.9% min |
Phosphorus | 0.8% min |
The following feeding program is recommended as a guideline only, with discretionary clinical adjustments for proper weight maintenance.
Weight | Adult Maintenance Daily Feeding (cup) |
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3 - 5 lbs | 1/4 - 1/2 |
6 - 8 lbs | 1/2 - 2/3 |
9 - 12 lbs | 2/3 - 1 |
13 - 16 lbs | 1 - 1 1/4 |
17 - 20 lbs | 1 1/4 - 1 1/2 |
21 - 25 lbs | 1 1/2 - 2 |
Provide adequate fresh water in a clean container for your pet daily. For your pet’s health, see your veterinarian regularly.
Kittens: If your cat is under 1 year of age, consult your veterinarian for the proper amount to feed.
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.

The PPVD Approach
Some cats experience health conditions that need to be managed by a veterinarian, sometimes through a special diet. Each formula from Purina Pro Plan Veterinary Diets (PPVD) is specifically formulated to help vets do just that! A group of Purina nutritionists, scientists and veterinarians have teamed up to establish different therapeutic diets and science-based recipes tailored to meet the unique needs of felines with certain health concerns.

Targeted Nutrition
Purina Pro Plan Veterinary Diets offers multiple nutritional options specifically tailored to a variety of cats with special needs. This product line includes gastroenteric formulas, kidney function formulas and more. Each diet is crafted with a specific nutrient profile to support your cat’s unique nutritional needs. Now he can enjoy delicious nutrition with a therapeutic purpose.
The Delicious Taste Cats Love
Not only is every recipe designed with your cat in mind, but they are also made with a great taste felines love. So every time you feed your cat, you can feel good knowing that he's not only getting a flavor he'll enjoy, but also the specific, targeted nutrition he needs.
Formulated by Experts
Trusted by pet parents, Purina Pro Plan Veterinary Diets' advanced nutrition is established through decades of research that has been supported by over 500 scientists, including veterinarians, behaviorists and nutritionists. This knowledge and experience have laid the groundwork for therapeutic pet foods designed to meet the nutritional needs of feline companions.
About Purina Pro Plan Veterinary Diets
Purina believes that every pet should eat well. That's why they've created a robust range of diets that tailor to the unique nutritional needs of dogs and cats with certain health conditions. From wet food to dry food and even treats, Purina crafts every recipe with high-quality, flavorful nutrition to help pets get the most out of every meal. Pets are their passion, safety is their promise, and innovation is their pledge.

Customer Reviews
90% Recommend
90% of reviewersrecommend this product
You've Already Reviewed This Item
140 Reviews
Showing 1-10 of 140 Reviews
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Drogon Loves This!!
By Drogon on Apr 4, 2021
I had been feeding my cat Royal Canin Hydolized Protein food since he was diagnosed a couple of years ago. Recently, I got a notice from Chewy that the food was no longer available. They recommended substitutes. This was one of them. My vet approved, so I ordered it. I was worried about changing foods, so I mixed a little in with his old food. It was the first time he’d ever eaten all the dry food! I fed it to him without mixing and it’s already gone! Woohoo!!
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Very disappointed in the Purina Pro Plan HA dry cat food
By Jayme on Mar 12, 2021
Seems there is a quality check issue at their plant. Or, maybe Chewy has older stock. My cat likes to CRUNCH her dry food when she eats. The most recent bag delivered had such tiny pieces throughout, I throw away half of every scoop I give her. She just leaves it in the bowl, and begs for more. The food looked as though it came off the end of the production line as they were cleaning. Last year, I purchased this same food direct from Purina, through my veterinary clinic. The quality of the food was similar in two of the six shipments. I had hoped the quality of production had been corrected by now.
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taste issue maybe?
By Jwyl on Mar 29, 2021
We got this as a replacement when what we usually get wasn't available. Our cats are picky eaters, at times, and are still not sure about this. I don't think they like the taste... or maybe it is the size of the crunchies being smaller. They do eat it eventually, as it is all they get, but they are still skeptical.
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Excellent food
By Lisa on Feb 18, 2021
I have an elderly cat who has been steadily losing weight and vomiting almost daily. Her fur was rough, oily looking, she was so very thin. Her vet recommended this food and she has been eating it for about a month. She is also taking prednisolone, and I’m sure that’s helping. But with this food, she can eat all she wants, and has not vomited once. So happy to see her eat, enjoy her food, keep it down. She’s gained her weight back, smooth soft fur, bright eyes. She will stay on this food.
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Jurys decision is in.
By pete on Mar 17, 2021
Only one of our two cats needs this formula but both the girls eat and their responses have been the same, is there anything else? We have had the food for several weeks now and their reaction has not changed, they eat a little occasionally but not much, we have moved onto wet food and are looking for another dry formula.
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Kind of expensive but worked for my cat with stomach issues
By Sansa on Mar 4, 2021
My cat Sansa has a very picky stomach and was throwing up a lot, it got to be several times a day, so my vet prescribed this food. She hasn't been throwing up her food at all anymore (except when she is naughty and steals our food when we look away for a second!) It's a bummer that it costs so much though - worth it for our little baby, of course.
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Both my cats LOVE it
By OSPR on Jan 30, 2021
One of my cats in particular (a senior with only two teeth left) adores this food. In 17 years, I've never seen him go so crazy for food. Both of my cats have IBD, and I was feeding the wet and dry Hill's ID, but one of my cats developed a weight problem and very high triglycerides. Finding a food that has a lower fat content and is hydrolyzed is very difficult, esp for wet food. So far both cats have done great. I know this isn't a diet food, but it does have lower fat compared to Hill's ID. However, I really miss the velcro closure on the Hill's food. This Purina food requires you to either roll the bag and use chip clips or put it in a food safe container. For the price, Purina could fix this One of my cats in particular (a senior with only two teeth left) adores this food. In 17 years, I've never seen him go so crazy for food. Both of my cats have IBD, and I was feeding the wet and dry Hill's ID, but one of my cats developed a weight problem and very high triglycerides. Finding a food that has a lower fat content and is hydrolyzed is very difficult, esp for wet food. So far both cats have done great. I know this isn't a diet food, but it does have lower fat compared to Hill's ID. However, I really miss the velcro closure on the Hill's food. This Purina food requires you to either roll the bag and use chip clips or put it in a food safe container. For the price, Purina could fix this and give us the velcro closure. … more
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Purina was a no go.
By Sandy on Mar 30, 2021
When Chewy told me my Royal Canin Hydrolyzed Protein was out of stock, I tried Purina HA Hydrolyzed Formula. My cats would pick it out of the bowl and leave it on the floor. Thank goodness the Royal Canin came back in stock!
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The Cats' Meow - 4 Paws Up
By Supermax on Feb 12, 2021
We are beyond delighted with the exceptional customer service and lightning-fast delivery (even with the extra time needed to provide vet approval). Your company should give a master class in communication and professionalism to the industry. Our cats, Ziggy and Zoe, give you 4 paws up and are having a ball playing in the cardboard delivery box. Who knew Chewy includes cat recreational toys with each order? A most positive recommendation from all of us.
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coco the cat loves this food
By coco on Mar 4, 2021
this food really is a blessing for my senior cat. She vomits her food quite a bit and this hydrolyzed protein really is effective in managing GI issues. the minute i add a canned food unfortunately it is back to vomiting . this food works well