Hill's Prescription Diet Digestive Care i/d
Hill's Prescription Diet Digestive Care i/d scores 3/5 on Moesonson's label-based analysis. Its strongest factor is animal-protein content (strong — 83% of the weighted protein comes from animal sources); its weakest is protein clarity (high — 67% of the recipe's protein panel is clearly named).
Rating
Updated Sep 2026
How this score is made
This score isn’t a hand-wavy impression: it reads what the label actually prints — the ingredient list, guaranteed analysis and AAFCO adequacy statement — and runs it through the same algorithmic rubric as every other product. No brand pays for placement, and there are no affiliate links on reviewed products.
Is Hill's Prescription Diet Digestive Care i/d dry cat food good?
Hill's Prescription Diet Digestive Care i/d is a dry cat food rated 3 stars, with high ingredient transparency and strong animal protein content. The recipe lists most animal ingredients by name and features real muscle meat as a primary protein source. However, animal by-products make up a significant share of the protein. This recipe is free from Gluten grains, Dairy, Egg, Legumes, Nuts, Red meat, Fish, Shellfish, Unknown Meal but contains Grains (gluten-free), Poultry.
Allergy Highlights
Contains:
Free From:
Pros
- Includes a fair number of clearly named animal ingredients.
- Includes plant ingredients that can provide fiber and natural antioxidants.
Cons
- Relies heavily on animal by-products, which can vary in quality.
- Some non-animal ingredients are not clearly identified, which reduces formula transparency.
Nutrition Breakdown
| Protein | 40% |
|---|---|
| Fat | 21% |
| Est. Carbs | 29% |
| Fiber | 2% |
| Ash | 7% |
Moisture (10%) removed so you can compare foods fairly.
Dry matter basis = label value ÷ (100% − moisture%). Carbs estimated from remaining.
| Protein | 36% |
|---|---|
| Fat | 19% |
| Est. Carbs | 27% |
| Fiber | 2% |
| Moisture | 10% |
| Ash | 6% |
Moisture not listed on label; 10% used as the standard estimate for this food type.
As-fed values are the raw percentages printed on the product label.
Tips
- Protein is High (40% dry matter) on our label-based comparison range. This is generally more aligned with cats' higher protein needs than lower-protein recipes, assuming the food is complete for the cat's life stage.
- Fat is High (21% dry matter) on our label-based comparison range. It can raise calorie density, so watch body condition and seek vet input for cats with pancreatitis or digestive disease.
Ingredients Analysis
16 of 19 matched
-
1 Cereals
CarbsDescription
A mixture of grains such as corn, rice, and wheat, usually with a high content of carbs.
Why Notice?
An inexpensive filler with gluten, with limited nutrition value to dogs / cats. Made of unknown sources, its quality is highly questionable.
Uncertain/Risky
Could be made of by-products / inferior food that are not suitable for consumption.
-
2 Meat And Animal Derivatives
Animal ProteinDescription
Made of unnamed animal parts leftover after muscle meat is removed in the slaughterhouse. It could include anything from necks, undeveloped eggs, feet, and internal organs.
Why Notice?
Unspecified animal products from unknown sources. Its quality is highly concerned, often seen in low quality pet foods.
Uncertain/Risky
Could be made from any animals, including "4-D animals" (dead, diseased, disabled, or dying prior to slaughter). Contaminated meats can lead to severe illnesses.
-
3 Chicken Meal
Animal ProteinDescription
A dehydrated form of chicken, it is a meat concentrate that contains up to 4 times more protein than fresh chicken on dry matter basis.
Why Prefer?
A high-quality animal protein with high digestibility and biological value.
-
4 Turkey Meal
Animal ProteinDescription
A large bird looks similar to chicken, high in protein, and packed with vitamin B3, B6, B12, selenium, zinc, and phosphorus.
Why Prefer?
A high-quality animal protein with high digestibility and biological value.
-
5 Vegetable Derivatives
CarbsDescription
Vague term for unspecified plant-based by-products with unclear nutritional value.
Why Concerned?
Unnamed plant source — specific plants not disclosed.
-
6 Oils And Fats
FatDescription
Fat extracted from unknown sources, made of unspecified plants or animal parts.
Why Notice?
Unspecified products from unknown sources. Its quality is highly concerned, often seen in low quality pet foods..
Uncertain/Risky
Could be made of inferior, contaminated foods that are not safe for consumption.
-
7 Vegetable Protein Extracts
Plant Protein ConcentrateDescription
Protein extracted from unspecified vegetables, including soy, corn, and wheat. It contains a high level of plant protein, which is often used to boost up the protein content of pet foods.
Why Notice?
Unspecified plant products made of unknown sources. Its quality is highly concerned, often seen in low quality pet foods.
Digestion Concern
A high level of plant-based protein is not easily digestible and offer much less biological value (less absorbed by the body) to pets compared to animal protein.
Uncertain/Risky
Without specifying the source, by-products and contaminated plant parts could be used to produce unnamed plant products.
- 8 Eggs and Egg Derivatives
No match found in database
-
9 Brewers Rice
CarbsDescription
Small milled fragments (5/164 of an inch) of rice kernels that have been separated from the larger kernels of milled rice. “Dust” and “floor sweepings” from rice.
Why Concerned?
A common filler without gluten, with limited nutrition value to dogs / cats.
-
10 Maize
CarbsDescription
Commonly known as corn, a grain that is often referred as "cheap filler" in pet foods, mainly due to its high carbs content and low to moderate nutrition profile.
Why Concerned?
A controversial filler with limited nutrition value to dogs / cats.
Allergen Concern
One of the most reported ingredients to be the likely cause of allergies. This could be due to the undiscovered contaminants within corns. Contrary to the real situation, studies show that the chance of getting corn allergy is 14% and only accounts for 3% of allergies.
Digestion Concern
It is high in cellulose, which is an insoluble fiber that is hard to digest.
- 11 Maize Protein Concentrate
No match found in database
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12 Minerals
SupplementDescription
A general term for mineral supplementation, specific sources not identified.
-
13 Fruits
CarbsDescription
A general term for fruit ingredients, specific sources not identified.
Why Notice?
Fruit is an acceptable source of vitamins, minerals, and antioxidants. However, without specifying the fruit names, it could be made of any parts of fruit (the peel, unedible root), and the quality is highly questionable.
-
14 Seeds
CarbsDescription
Unspecified seed ingredient with unknown type.
Why Concerned?
Unnamed seed — specific source not disclosed.
- 15 Ground Pecan Nut Shells
No match found in database
-
16 Flaxseed
FatDescription
One of the richest sources of plant-based omega 3s, well known for its anti-inflammatory properties. It contains around 41% of fat, 57% of the total fatty acids is omega 3s.
-
17 Dried Beet Pulp
CarbsDescription
The leftover pulp after sugar is extracted from sugar beets, contains higher fiber and less sugar compared to whole beets.
Why Concerned?
Controversial - Some say it is a good dietary fiber source, some believe it is just an inexpensive filler.
-
18 Dried Citrus Pulp
OthersDescription
Dried pulp from citrus fruits, a source of pectin fiber and flavonoids.
Why Concerned?
A food additive that might cause health issues.
-
19 Dried Cranberries
CarbsDescription
High in vitamin C and antioxidants, it is also best known for fighting Urinary Tract Infections. While it could be true for humans, the effect on pets is yet to be confirmed by further research.
Tips
- Some protein sources are less clear: Meat And Animal Derivatives appear near the top without a clearly defined animal source.
- Plant protein is worth closer review for cats: Vegetable Protein Extracts may raise the listed protein percentage without meaning there is more meat.
- Higher-priority ingredients to review: Cereals, Meat And Animal Derivatives, Oils And Fats.
- Higher-caution ingredients: Cereals, Meat And Animal Derivatives, Oils And Fats, and 1 more have caution notes in the ingredient database.
- Possible allergy triggers: Maize have allergen notes; review them if your pet has sensitivities.
Protein Analysis
How this recipe earned its protein scores.
Protein Clarity
Moderate- Named 67%
- By-products 33%
Mixed clarity: 67% of Hill's Prescription Diet Digestive Care i/d's animal-protein ingredients are clearly named, but 0% use vague terms such as "meat meal" and 33% are by-products. Where names are vague, you cannot verify the source or check for allergens.
Contributing ingredients
Named
By-products
Animal Protein
High- Animal 83%
- Plant concentrate 17%
Meat-forward: 83% of the weighted protein in Hill's Prescription Diet Digestive Care i/d comes from animal sources. Plant signals are modest (0% whole plants, 17% plant concentrates), so the protein profile leans on real meat.
Contributing ingredients
Animal
Plant concentrate
Hill's Prescription Diet Digestive Care i/d dry cat food Review
Hill's Prescription Diet Digestive Care i/d is a solid mid-tier dry cat food at 3 stars, with high ingredient transparency and strong animal protein content. It has clear strengths alongside a few trade-offs worth weighing.
Best for
- Owners who want clearly named protein sources
- Pets that thrive on muscle-meat protein
Avoid if
- You're avoiding plant-protein concentrates like pea or soy isolate
Key takeaways
- Named animal proteins make up 67% of the recipe's protein panel — a clear sourcing win.
- Animal by-products account for 33% of the protein, which can vary in quality.
- Plant-protein concentrates appear in the top 10 ingredients: Vegetable Protein Extracts.
- Contains common allergens: Grains (gluten-free), Poultry.
- On a dry-matter basis: 40% protein, 21% fat, 29% estimated carbohydrates.
Frequently asked questions
Is Hill's Prescription Diet Digestive Care i/d good for cats?
Mostly — Hill's Prescription Diet Digestive Care i/d is a solid mid-tier choice at 3 out of 5 stars on Moesonson’s label-based analysis, pairing high ingredient transparency with strong animal protein content. It shows real strengths alongside a few trade-offs, so weigh the ingredient list against your cat’s needs — allergies, life stage and protein preference.
Does Hill's Prescription Diet Digestive Care i/d contain Dairy?
No — based on the printed ingredient list, Hill's Prescription Diet Digestive Care i/d does not include Dairy or closely related ingredients, so pets sensitive to Dairy can typically avoid that trigger here. Recipes do get reformulated, though, so re-check the packaging before feeding — Moesonson’s reading reflects the label at analysis time.
Does Hill's Prescription Diet Digestive Care i/d contain Egg?
No — based on the printed ingredient list, Hill's Prescription Diet Digestive Care i/d does not include Egg or closely related ingredients, so pets sensitive to Egg can typically avoid that trigger here. Recipes do get reformulated, though, so re-check the packaging before feeding — Moesonson’s reading reflects the label at analysis time.
Does Hill's Prescription Diet Digestive Care i/d contain Legumes?
No — based on the printed ingredient list, Hill's Prescription Diet Digestive Care i/d does not include Legumes or closely related ingredients, so pets sensitive to Legumes can typically avoid that trigger here. Recipes do get reformulated, though, so re-check the packaging before feeding — Moesonson’s reading reflects the label at analysis time.
Does Hill's Prescription Diet Digestive Care i/d contain Nuts?
No — based on the printed ingredient list, Hill's Prescription Diet Digestive Care i/d does not include Nuts or closely related ingredients, so pets sensitive to Nuts can typically avoid that trigger here. Recipes do get reformulated, though, so re-check the packaging before feeding — Moesonson’s reading reflects the label at analysis time.
Is Hill's Prescription Diet Digestive Care i/d grain-free?
No — Hill's Prescription Diet Digestive Care i/d is not grain-free: the printed ingredient list includes Grains (gluten-free). That mainly matters for pets with a diagnosed grain sensitivity or allergy; most cats tolerate grains well as an energy source. If your cat must avoid grains, choose a recipe without these ingredients.
What are the main protein sources in Hill's Prescription Diet Digestive Care i/d?
The main animal proteins in Hill's Prescription Diet Digestive Care i/d are Chicken Meal, Turkey Meal. Each is named by species on the printed ingredient list — a protein-clarity strength in Moesonson’s scoring, because named sources let you verify what your cat is eating and avoid specific proteins when managing food allergies.
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