4.7(1,600)Amazon rating$135.991,000+ bought last month
Our verdict
Hill's Prescription Diet z/d Skin/Food Sensitivities uses highly hydrolyzed chicken protein to help dogs with food allergies or stubborn skin issues, and its 4.7 star average across roughly 1,630 reviews makes it one of the better rated formulas in this lineup.
Dogs with diagnosed food allergies, chronic skin and coat issues, or sensitivities that a vet has linked to reactions from intact proteins.
Skip if
Your dog doesn't have a diagnosed food sensitivity or skin issue, since the hydrolyzed protein approach is a targeted allergy management tool rather than a general purpose food.
Form Dry Food
Flavor Chicken | Regular Bites
Benefits Promotes Digestive Health And Firm Stools
Best for Allergy Relief, Skin And Coat
Breed size All
Weight 25 Pounds
Priced 66% above the category median ($81.99 across 50 tracked models)
Our scorecard
4.7/5overall
Owner rating4.7/5
4.7 average across 1,600 owner ratings
Popularity4.7/5
1,600 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["This 25 lb bag of Hill's Prescription Diet z/d Skin/Food Sensitivities uses highly hydrolyzed chicken, meaning the protein is broken down small enough that it's less likely to trigger an allergic reaction, which is the core strategy behind this formula's approach to food allergies and skin problems.", "Hill's also includes what it calls ActivBiome+ Digestion in the formula, aimed at supporting digestive health and firmer stools alongside the allergy management goal, and the label lists benefits around skin and coat support as well. It's built for all breed sizes rather than one weight class.", "At $135.99 for the 25 lb bag, this is one of the pricier options in the veterinary diet lineup, but with about 1,630 reviews and a 4.7 star average plus roughly 1,000 units bought last month, it's also one of the most proven and widely used formulas here."]
Pros
Highly hydrolyzed protein designed for food allergy management
Strong 4.7 star rating across roughly 1,630 reviews
Includes ActivBiome+ Digestion support for firmer stools
Formulated for all breed sizes
Cons
Premium price for the 25 lb bag
Meant for diagnosed sensitivities, not everyday feeding
Still chicken derived, so dogs needing a fully novel protein may need a different formula
Specifications
Form
Dry Food
Flavor
Chicken | Regular Bites
Benefits
Promotes Digestive Health And Firm Stools
Best for
Allergy Relief, Skin And Coat
Breed size
All
Weight
25 Pounds
Performance notes
Because the chicken protein here is hydrolyzed rather than intact, the formula is built to be less likely to trigger the immune response that causes food allergy symptoms, while the added digestive support ingredients are aimed at firming up stools in dogs whose systems are sensitive.
What buyers say
With about 1,630 reviews and a 4.7 star average, plus an estimated 1,000 units bought last month, this is one of the most consistently well reviewed and frequently purchased formulas in the veterinary diet range.
Hydrolyzed protein has been broken down into smaller pieces than intact protein, which makes it less likely to trigger an allergic response in dogs with food sensitivities, though your vet should confirm this is the right approach for your dog's specific symptoms.
Will this help my dog's itchy skin?
The formula is formulated to support skin and coat health as part of managing food sensitivities, but chronic itching can have many causes, so a vet visit is the best way to confirm food allergy is the underlying issue.
Is this a good everyday food for a healthy dog?
It's built as a targeted diet for dogs with diagnosed food sensitivities or skin issues, so a healthy dog without those issues would likely do fine on a standard formula instead.
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