Purina Pro Plan Veterinary Diets HA Hydrolyzed Chicken Flavor Dry Dog Food

By Purina Pro Plan Veterinary Diets
Rated 4.3743 out of 5 stars
Veterinary Diet Item


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$45.99Chewy Price
$43.69Autoship Price
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This item requires vet authorization.

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Hill's Prescription Diet Hypo Crunchy Dog Treats, 12-oz bag
Rated 4.5719 out of 5 stars
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Total Price: $115.97

About This Item


  • Features hydrolyzed proteins—these proteins have been broken down into small components to be less likely to cause an adverse food reaction in certain dogs.
  • Provides a single source of carbohydrates and high-quality proteins.
  • Highly digestible formula promotes optimal nutrient absorption.
  • Suited for dogs with food allergic gastroenteritis or dermatitis, food intolerance, inflammatory bowel disease or pancreatitis.
  • Contains coconut oil, a source of medium-chain triglycerides, to promote alertness and mental sharpness in dogs ages seven and older.

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Nutritional Information

Feeding Instructions


Play Video: Learn More About Purina Pro Plan Veterinary Diets From Our Team of Experts
Learn More About Purina Pro Plan Veterinary Diets From Our Team of Experts

About Purina Pro Plan Veterinary Diets Dermatology

Formulated for Success

If your dog is sensitive to certain foods, Purina Pro Plan Veterinary Diets has great ways to make sure he still gets the delicious-tasting nutrition he needs. They offer a comprehensive line of products formulated for dogs with specific food sensitivities or dermatologic issues, including diets with advanced nutrition, select flavor varieties, and even treats that reduce the risk of weight regain and fat accumulation.

Great Taste

Made with the specific nutrition your dog needs, with a great taste to help ensure adequate nutrient intake.

Made by Experts

Science-based recipes developed by a collaborative network of scientists, veterinarians and nutritionists.

Exceptional Quality

In a typical day, Purina conducts 100,000+ quality checks on ingredients, processing, packaging, packing and receiving.

Responsible Sourcing

Each ingredient can be traced back to its trusted supplier, so quality may be evaluated all the way back to the source.

About Purina Pro Plan Veterinary Diets

Purina Pro Plan Veterinary Diets is committed to the health of every pet, especially those with unique nutritional needs. Established through decades of research and supported by a global network of scientists, each recipe is formulated to deliver advanced nutrition for your pet. For innovative therapeutic products trusted by pet owners and veterinary professionals alike, you can always count on Purina Pro Plan.

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Top IngredientsCorn Starch, Hydrolyzed Soy Protein Isolate, Partially Hydrogenated Canola Oil Preserved With Tbhq...Brewers Rice, Corn Gluten Meal, Whole Grain Corn...Corn Starch, Hydrolyzed Soy Protein Isolate, Coconut Oil...Whole Grain Corn, Brewers Rice, Chicken By-Product Meal...Whole Grain Corn, Brewers Rice, Dried Egg Product...
Breed SizeExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...
Special DietVeterinary Diet, Pea-Free, Hydrolyzed ProteinSensitive Digestion, Veterinary Diet, Pea-Free, With GrainSensitive Digestion, Vegetarian, Veterinary Diet...Veterinary Diet, Pea-Free, With GrainLow-Protein, Veterinary Diet, Pea-Free, With Grain
Food FlavorPoultry, ChickenPoultry, ChickenFruits & VegetablesPoultry, ChickenPoultry, Chicken
Health FeatureDigestive Health, Skin & Coat HealthDigestive HealthDigestive Health, Skin & Coat HealthUrinary Tract HealthKidney Care
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

20 Customer Questions

If my dog is allergic to chicken can I still get the chicken flavor?
Answer by ChewyAug 05, 2019
Since this dog food contains Hydrolyzed Chicken Liver and Hydrolized Chicken, it is not recommended to feed to dogs with allergies or an intolerance to chicken. Each pet is unique so we encourage you to seek professional guidance to select the best products along with their current health.

I thought garlic was supposed to be bad for dogs. Why does this formula contain garlic oil?
Answer by ChewyNov 18, 2018
Many people believe that garlic is harmful to dogs, and in large, concentrated doses this can be true. However, in the proportions that we use, it is highly beneficial to heart health, acts as a natural flea repellent, an antioxidant and anti-bacterial ingredient. Just like with humans, many things are healthy (and indeed necessary) in small doses but potentially harmful in large, concentrated doses.

Is a prescription needed to order this food?
Answer by ChewyApr 04, 2023
This recipe requires a veterinarian approval.

What's the difference between Purina Pro Plan Veterinary Diets HA Hydrolyzed and EN gastroenteric
Answer by ChewyApr 24, 2019
Purina Pro Plan Veterinary Diets HA formula is suited for dogs that have food allergic gastroenteritis or dermatitis, food intolerance, inflammatory bowel disease, or pancreatitis. Purina Pro Plan Veterinary Diets EN formula is suited for dogs that have gastritis and enteritis, inflammatory bowel disease, pancreatitis, and other diseases of the intestinal tract.

ReviewsWrite a Review

Rated 4.3743 out of 5 stars
342 Ratings
Would recommend to a friend

342 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By Sue on Sep 24, 2023

Purina pro plan HA (Hydrolyzed) dry food

Sophie is absolutely in love with this brand of her special (and mandatory) dry food! She had been on a similar type of food but a different brand, and our vet recommended Purina brand because it is more specialized for Sophie’s medical condition. My 10 year old, arthritic Lab acted like a puppy when the bag was opened and she had her first taste. We even use it as treats when she does something good. We also use the same type canned wet food to put her medication in and she is now always compliant with meds!

Rated 2 out of 5 stars
By Emmcadee13 on Sep 6, 2023

Not Going as Planned

The vet put my 4 year old dachshund on this to eliminate protein allergies and to help his GI. He loves this food. However, since he's been taking it, he's now on antacids twice daily for gut upset while trying to acclimate to the food. It's been a month. He never had red skin, hair loss or any of the things you all are mentioning. His stomach hurts everyday. I don't know if it's the chicken or what. But he never had this before. I'm so confused. He also throws up on occasion. I don't know what's going on except this food makes his stomach rumble, bloat and require medication even though he absolutely loves the taste!

Rated 3 out of 5 stars
By Greek1 on Sep 13, 2023


Harley Quinn (STAFFY) loves the food. But like others I’ve read, Harley Quinn’s poop has also become VERY tiny and in TINY amounts. This is vet recommended food for a medical issue HQ has and I had hopes it would help, but I cannot risk it causing another. I’m terrified it will lead to constipation. So I have to stop the food. Luckily I just swapped her to this and will unfortunately need to swap back to Royal Canin WP Moderate Calorie -

Rated 5 out of 5 stars
By Lee on Aug 26, 2023

HA Works and Dog Loves Diet

Our 13 y.o. Aussie has a sensitive gut and other digestive issues. We have tried high-end and low-end, limited ingredient and grain-free, canned and dry, even home made. Finally, at our specialist's recommendation, we tried Purina Pro Plan Hydrolyzed HA, both canned and dry. Luna loves the new food. The symptoms of reflux have subsided, her stool is normal and she is more energetic. Very satisfied with this diet. Highly recommend.

Rated 5 out of 5 stars
By allergyfood on Aug 17, 2023

Addysaurus approves!

Our vet prescribed this for our 15 month old Aussiedor while we try to isolate her food allergies. I was fully prepared for her to hate it, thinking how good can ground of vitamins be? WRONG. She absolutely loves this food and begs for more. While I’m hoping it’s not a long term necessity, I might be okay with it given how tasty it apparently is!

Rated 5 out of 5 stars
By Kathy on Aug 22, 2023

5 Star Review

Chewy’s is my go to for all of Sadie’s (my bulldog) needs. Whether it’s food, meds or toys it is my one stop shopping place. The products are top notch and the speed of delivery is unmatched. Your customer service department is the best.

Rated 5 out of 5 stars
By Audrey on Sep 19, 2023

My dog loves it

Switched my dog onto this from a softener different prescription diet that she hated. She loves this kibble and it seems to help her digestive issues.

Rated 3 out of 5 stars
By Stempd on Jun 8, 2023

Have to use this

I gave this a middle star because there is nothing wrong with the food.....My shepherd just HATES THIS chicken flavored food. His vet put him on this due to chronic itching that apoquel did not help. He smelled awful. We put him on this and he ate it at first. It smells like corn pops. The third month on this.....he will eventually eat this because he is given NOTHING else, but he leaves probably half in his dish each feeding....so he might be eating 2 cups a day, which is not good. He is hungry because he is now raiding the garbage which he never did before. I pour the food into his dish and he just walks away Has it helped his condition.....not really.. i am now giving him Benadryl at night and apoquel in the morning, but he still itches and still smells a bit funky. But, it is allergy time...so who knows. His poops however are small and not as smelly. Before they were like plops of horse poop This is his third month on this stuff....will check with the vet to see if we should continue

Rated 5 out of 5 stars
By Kimmy1 on Aug 7, 2023

Health necessity for my dog.

My dog has Immune Mediated Poly Arthritis. Her internal med. vet prescribed this to decrease her vomiting. Unbelievable response. She hasn’t vomited since she started eating this. And she loves it! It has been a game changer.

Rated 1 out of 5 stars
By misspatsy on Aug 21, 2023

causes itching

Transitioning my dog from another hydrolyzed food to purina hydrolyzed food. He’s been on the purina for 8-9 days. It’s really making him itch. I should not have changed to this food.