veterinary diet
This is a medical nutrition decision. Speak to your vet.
This is a veterinary diet product: a "dietetic" feed designed for a particular nutritional purpose and intended for use under veterinary direction. The score and figures below are readings of the label, the same as for any other food: they can't tell you whether this product is right for your dog.
Hill's Pet Nutrition Prescription Diet d/d Potato & Salmon Recipe Dry Dog Food
Dry Extruded · completeveterinary diet
Our verdict
Is Hill's Pet Nutrition Prescription Diet d/d Potato & Salmon Recipe Dry Dog Food a good dog food?
We score it 43/100 (Poor). The main reasons are set out in "Why you might not" below, and every step of the calculation is shown under "How we calculated this score".
100% of this recipe has no printed percentage. Estimated shares are model estimates, not label facts.
Who is this food for?
Suits
- Labelled by the manufacturer for adult dogs
- Grain-free: no grain ingredients listed
- Doesn't list chicken, beef, turkey, lamb, venison, duck as ingredients
Consider something else if:
- Your dog avoids fish: the label lists salmon
- Your dog avoids pork: it is listed as an ingredient
- You want a single-protein recipe: this one lists more than one animal protein
These points are derived from declared ingredients and analysis, not a substitute for veterinary advice. If your dog has a diagnosed condition, food choice is a medical nutrition decision: speak to your vet. Find foods that fit your dog.
Nutrition and feeding
Typical analysis (as fed)
| Nutrient | As fed | Dry matter | Directory average |
|---|---|---|---|
| Protein | - | 18.50% | 37.69% (137 eligible foods) |
| Fat | - | 16% | 23.89% (134 eligible foods) |
| Fibre | - | 3.40% | 3.81% (135 eligible foods) |
| Carbohydrates | - | 55.80% | 30.63% (76 eligible foods) |
| Omega-3 fatty acids | 0.94% | - | - |
| Omega-6 fatty acids | 3.64% | - | - |
| Calcium | 0.85% | - | - |
| Phosphorus | 0.65% | - | - |
| Sodium | 0.39% | - | - |
Energy: 364.3 kcal/100g
Additives & feeding info
Feeding and storage
Feeding guide
Adult maintenance feeding guide by weight: 5 lb (2.3 kg): 1/2 cup (50 g); 10 lb (4.5 kg): 7/8 cup (90 g); 15 lb (6.8 kg): 1 1/4 cup (130 g); 20 lb (9.1 kg): 1 1/2 cup (155 g); 30 lb (14 kg): 2 1/4 cup (230 g); 40 lb (18 kg): 2 2/3 cup (270 g); 50 lb (23 kg): 3 1/4 cup (330 g); 60 lb (27 kg): 3 2/3 cup (375 g); 70 lb (32 kg): 4 cup (410 g); 80 lb (36 kg): 4 1/2 cup (460 g); 100 lb (45 kg): 5 1/4 cup (535 g); 120 lb (54 kg): 6 cup (610 g). Gradually transition over 7 days or more; exclusively feed the recommended Prescription Diet dry and wet foods; keep fresh water available at all times.
Additives declared on the label
Nutritional additives
Vitamin E 707 IU/kg; Vitamin C 110 ppm; L-Ascorbyl-2-Polyphosphate (source of Vitamin C); Niacin Supplement; Thiamine Mononitrate; Calcium Pantothenate; Pyridoxine Hydrochloride; Vitamin A Supplement; Riboflavin Supplement; Biotin; Vitamin B12 Supplement; Folic Acid; Vitamin D3 Supplement; Ferrous Sulfate; Zinc Oxide; Copper Sulfate; Manganous Oxide; Calcium Iodate; Sodium Selenite
Technological additives
Mixed Tocopherols for freshness
Ingredients (40)100% of the recipe is estimated
Estimated composition
- carb 23.5%
- supplement 20.7%
- oil 19.4%
- additive 15.8%
- meat 14.0%
- fibre 6.6%
| # | As declared | Matched | Label reading | Declared % | Est. % |
|---|---|---|---|---|---|
| 1 | Potatoes | Potatoes | carb · medium | - | 3.3 |
| 2 | Potato Starch | Potato starch | carb · poor | - | 3.3 |
| 3 | Salmon | Salmon | meat · good | - | 3.2 |
| 4 | Potato Protein | Potato protein | carb · medium | - | 3.2 |
| 5 | Soybean Oil | Soybean oil | oil · medium | - | 3.1 |
| 6 | Coconut Oil | Coconut Oil | oil · medium | - | 3.1 |
| 7 | Powdered Cellulose | Powdered Cellulose | fibre · poor | - | 3.1 |
| 8 | Pork Liver Flavor | Liver | meat · good | - | 3.0 |
| 9 | Dicalcium Phosphate | Dicalcium phosphate | supplement · medium | - | 3.0 |
| 10 | Lactic Acid | Lactic Acid | additive · medium | - | 2.9 |
| 11 | Potassium Chloride | Potassium Chloride | supplement · medium | - | 2.9 |
| 12 | Fish Oil | Fish Oil | oil · good | - | 2.9 |
| 13 | Glyceryl Monostearate | Glyceryl Monostearate | additive · medium | - | 2.8 |
| 14 | Iodized Salt | Salt | additive · poor | - | 2.8 |
| 15 | Choline Chloride | Choline | supplement · good | - | 2.7 |
| 16 | Calcium Carbonate | Calcium Carbonate | supplement · medium | - | 2.7 |
| 17 | Vitamin E Supplement | Vitamin E | supplement · good | - | 2.6 |
| 18 | L-Ascorbyl-2-Polyphosphate (source of Vitamin C) | L-ascorbyl-2-polyphosphate | supplement · good | - | 2.6 |
| 19 | Niacin Supplement | Niacin | supplement · good | - | 2.6 |
| 20 | Thiamine Mononitrate | Thiamine mononitrate | supplement · good | - | 2.5 |
| 21 | Calcium Pantothenate | Calcium pantothenate | supplement · good | - | 2.5 |
| 22 | Pyridoxine Hydrochloride | Pyridoxine hydrochloride | supplement · good | - | 2.4 |
| 23 | Vitamin A Supplement | Vitamin A | supplement · good | - | 2.4 |
| 24 | Riboflavin Supplement | Riboflavin | supplement · good | - | 2.4 |
| 25 | Biotin | Biotin | supplement · good | - | 2.3 |
| 26 | Vitamin B12 Supplement | Vitamin B12 | supplement · good | - | 2.3 |
| 27 | Folic Acid | Folic acid | supplement · good | - | 2.2 |
| 28 | Vitamin D3 Supplement | Vitamin D3 supplement | supplement · good | - | 2.2 |
| 29 | DL-Methionine | Methionine | supplement · good | - | 2.1 |
| 30 | Taurine | Taurine | supplement · good | - | 2.1 |
| 31 | Magnesium Oxide | Magnesium Oxide | supplement · good | - | 2.1 |
| 32 | Ferrous Sulfate | Iron sulfate | supplement · good | - | 2.0 |
| 33 | Zinc Oxide | Zinc Oxide | supplement · good | - | 2.0 |
| 34 | Copper Sulfate | Copper sulphate | supplement · good | - | 1.9 |
| 35 | Manganous Oxide | Manganese (II) Oxide | supplement · good | - | 1.9 |
| 36 | Calcium Iodate | Calcium iodate | supplement · medium | - | 1.9 |
| 37 | Sodium Selenite | Sodium selenite | supplement · poor | - | 1.8 |
| 38 | Mixed Tocopherols for freshness | Tocopherols | additive · good | - | 1.8 |
| 39 | Natural Flavors | Flavor | additive · poor | - | 1.7 |
| 40 | Beta-Carotene. | Beta Carotene | supplement · good | - | 1.7 |
- 1. Potatoes3.3% estimated
- 2. Potato Starch3.3% estimated
- 3. Salmon3.2% estimated
- 4. Potato Protein3.2% estimated
- 5. Soybean Oil3.1% estimated
- 6. Coconut Oil3.1% estimated
- 7. Powdered Cellulose3.1% estimated
- 8. Pork Liver Flavor3.0% estimated
- 9. Dicalcium Phosphate3.0% estimated
- 10. Lactic Acid2.9% estimated
- 11. Potassium Chloride2.9% estimated
- 12. Fish Oil2.9% estimated
- 13. Glyceryl Monostearate2.8% estimated
- 14. Iodized Salt2.8% estimated
- 15. Choline Chloride2.7% estimated
- 16. Calcium Carbonate2.7% estimated
- 17. Vitamin E Supplement2.6% estimated
- 18. L-Ascorbyl-2-Polyphosphate (source of Vitamin C)2.6% estimated
- 19. Niacin Supplement2.6% estimated
- 20. Thiamine Mononitrate2.5% estimated
- 21. Calcium Pantothenate2.5% estimated
- 22. Pyridoxine Hydrochloride2.4% estimated
- 23. Vitamin A Supplement2.4% estimated
- 24. Riboflavin Supplement2.4% estimated
- 25. Biotin2.3% estimated
- 26. Vitamin B12 Supplement2.3% estimated
- 27. Folic Acid2.2% estimated
- 28. Vitamin D3 Supplement2.2% estimated
- 29. DL-Methionine2.1% estimated
- 30. Taurine2.1% estimated
- 31. Magnesium Oxide2.1% estimated
- 32. Ferrous Sulfate2.0% estimated
- 33. Zinc Oxide2.0% estimated
- 34. Copper Sulfate1.9% estimated
- 35. Manganous Oxide1.9% estimated
- 36. Calcium Iodate1.9% estimated
- 37. Sodium Selenite1.8% estimated
- 38. Mixed Tocopherols for freshness1.8% estimated
- 39. Natural Flavors1.7% estimated
- 40. Beta-Carotene.1.7% estimated
Trust and sourceNo recalls recorded in our database · checked 2026-09-18
Brand and contact: Hill's Pet Nutrition
- Website
- https://www.hillspet.com/
- Contact page
- www.hillspet.com
Trust and provenance
- Recall history
- No recalls recorded in our database
- Label data last checked
- 2026-09-18
- Scored with
- Model v3 (methodology)
- Product page
- www.hillspet.com
Recall history is presentation-only and never affects the score. Dates are when we recorded the data, not when the manufacturer last changed the recipe.
Brand and retailer reviews
External platform ratings are not scores for this individual recipe.
Trustpilot: 3.0/5 · 3 reviews
Spotted a mistake in this listing? Report it here and we'll take a look.
Score details and methodologyCalculations, history and evidence
Recipe: how the 1-100 score is calculated
Why this score?
The overall score is 43 out of 100. Undeclared ingredient shares, meaning ingredients without printed percentages, contributed -10.6 points, while the processing format contributed -6.7 points and the additive load contributed -4.2 points. The additives in the recipe added +3.4 points back. This is a general explanation of how the score works, not veterinary advice. For any health condition, food choice is a decision for your vet.
Scored with model v3 on 2026-10-25. Each component is the feature value for this product multiplied by the model's published coefficient.
| Component | Input | Coefficient | Contribution |
|---|---|---|---|
| Base score | - | 30.909 | +30.91 |
| Average ingredient quality | 0.4 | 9.191 | +3.30 |
| Carb share of dry matter | 8.6% | -0.115 | -0.99 |
| Oil share of dry matter | 28.1% | -0.092 | -2.59 |
| Additive share of dry matter | 20.9% | 0.163 | +3.40 |
| Supplement share of dry matter | 27.9% | -0.012 | -0.34 |
| Recipe graded poor | 19.4% | -0.065 | -1.26 |
| Number of poor ingredients | 3 | -0.876 | -2.63 |
| Largest single poor ingredient | 7.9% | 0.060 | +0.47 |
| Undeclared quantities | 100.0% | -0.106 | -10.56 |
| Complete diet | yes | 2.294 | +2.29 |
| Low meat (under 10% of dry matter) | yes | -3.158 | -3.16 |
| Additive penalty | -19.08 | 0.222 | -4.23 |
| Processing multiplier | 0.98 | 33.786 | +33.11 |
| Processing: Dry Extruded | yes | -6.713 | -6.71 |
Show all 40 components
| Component | Input | Coefficient | Contribution |
|---|---|---|---|
| Base score | - | 30.909 | +30.91 |
| Average ingredient quality | 0.4 | 9.191 | +3.30 |
| Meat share of dry matter | 0.0% | 0.096 | +0.00 |
| Carb share of dry matter | 8.6% | -0.115 | -0.99 |
| Oil share of dry matter | 28.1% | -0.092 | -2.59 |
| Vegetable share of dry matter | 0.0% | -0.005 | +0.00 |
| Additive share of dry matter | 20.9% | 0.163 | +3.40 |
| Supplement share of dry matter | 27.9% | -0.012 | -0.34 |
| Other share of dry matter | 0.0% | -0.375 | +0.00 |
| Unrecognised share of dry matter | 0.0% | -0.027 | +0.00 |
| Recipe graded poor | 19.4% | -0.065 | -1.26 |
| Poor-quality meat in recipe | 0.0% | -0.179 | +0.00 |
| Number of poor ingredients | 3 | -0.876 | -2.63 |
| Largest single poor ingredient | 7.9% | 0.060 | +0.47 |
| Undeclared quantities | 100.0% | -0.106 | -10.56 |
| Prints ingredient percentages | no | 0.000 | +0.00 |
| Complete diet | yes | 2.294 | +2.29 |
| Frozen or chilled fresh | no | 0.000 | +0.00 |
| High meat (30%+ of dry matter) | no | 0.707 | +0.00 |
| Low meat (under 10% of dry matter) | yes | -3.158 | -3.16 |
| High carb and low meat | no | -1.180 | +0.00 |
| Meat share × printed percentages | 0.0 | 0.000 | +0.00 |
| Meat share × fresh | 0.0 | 0.000 | +0.00 |
| Fresh × high meat | 0.0 | 11.084 | +0.00 |
| Additive penalty | -19.08 | 0.222 | -4.23 |
| Processing multiplier | 0.98 | 33.786 | +33.11 |
| Processing: Raw | no | -0.054 | +0.00 |
| Processing: Fresh Chilled | no | -2.354 | +0.00 |
| Processing: Fresh Frozen | no | -2.354 | +0.00 |
| Processing: Fresh Refrigerated | no | 0.000 | +0.00 |
| Processing: Fresh Shelf | no | -0.672 | +0.00 |
| Processing: Dry Freeze Dried | no | 6.629 | +0.00 |
| Processing: Dry Air Dried | no | 6.331 | +0.00 |
| Processing: Dry Cold Pressed | no | -6.713 | +0.00 |
| Processing: Dry Baked | no | -6.713 | +0.00 |
| Processing: Dry Extruded | yes | -6.713 | -6.71 |
| Processing: Dry Semi Moist | no | -6.174 | +0.00 |
| Processing: Dry Muesli | no | -10.146 | +0.00 |
| Processing: Wet Pate | no | -0.672 | +0.00 |
| Processing: Wet Chunks | no | -0.672 | +0.00 |
- Processing-type offset
- +0.02
- Additives declared on label
- +2 transparency bonus
- Subtotal
- 43.0
- Final score
- 43/100
Contributions are rounded to two decimals, so they may not sum exactly to the subtotal. The full coefficient table is published on the methodology page.
Nutritional: declared analysis vs reference ranges
How the declared analysis compares with FEDIAF reference ranges for adult dogs. The label prints as-fed values; we convert to a dry-matter basis before scoring, and the bands are dry-matter ranges. Scores rise to 100 at the band midpoint: the reference is adequacy, not maximisation. Nutrients with a published upper limit taper again above it; fat is policed through calorie density rather than a direct penalty.
Guaranteed-analysis FEDIAF score: crude minimums and maximums are bounds, not typical values; moisture (a maximum) uses the processing median where available; experimental US score.
| Nutrient | As fed (label) | Dry matter (scored) | Score |
|---|---|---|---|
| Calcium | 0.85 | 0.9 (band 0.5031767955801105 to 2.5%) | 83.1 |
| Phosphorus | 0.65 | 0.7 (band 0.40254143646408846 to 1.6%) | 85.8 |
| Sodium | 0.39 | 0.4 (band 0.10063535911602212+%) | 100 |
| Calcium:phosphorus ratio | 1.3 | 1.3 (band 1 to 2%) | 88.5 |
| Omega fatty acids (omega-6 and omega-3) | - | - | 100 |
| Energy (kcal/100g) | 364.3 | 402.5 | 100 |
Omega fatty acids (omega-6 and omega-3): scored as the mean of its declared components (omega-6 100). The FEDIAF minimum for omega-6 is linoleic acid specifically.
Scored over 6 declared nutrients (combined weight 55); undeclared nutrients do not affect the score. Moisture was not declared and was estimated at 9.5% from the food type.
Declared fortification: 19 nutritional additives on the label
- Vitamin E 707 IU/kg
- Vitamin C 110 ppm
- L-Ascorbyl-2-Polyphosphate (source of Vitamin C)
- Niacin Supplement
- Thiamine Mononitrate
- Calcium Pantothenate
- Pyridoxine Hydrochloride
- Vitamin A Supplement
- Riboflavin Supplement
- Biotin
- Vitamin B12 Supplement
- Folic Acid
- Vitamin D3 Supplement
- Ferrous Sulfate
- Zinc Oxide
- Copper Sulfate
- Manganous Oxide
- Calcium Iodate
- Sodium Selenite
Low confidence: partial analysis or moisture estimated from the food type.
This measures agreement with published reference ranges, not suitability for an individual dog. For medical conditions, follow veterinary guidance.
Transparency: what the label discloses
How much the manufacturer discloses, measured against the FEDIAF Code of Good Labelling Practice and Regulation 767/2009. Mandatory items dominate the weighting.
| Item | Points |
|---|---|
| Ingredient list on the label (mandatory) | 10/10 |
| Printed percentages on the label (voluntary) - not on file | 0/20 |
| Analytical constituents declared (mandatory) - not on file | 0/15 |
| Additives declared (mandatory) | 10/10 |
| Energy value declared (voluntary) | 5/5 |
| Complete/complementary designation (mandatory) | 5/5 |
| Feeding guidance given (mandatory) | 10/10 |
| Manufacturer identity and address (mandatory) | 5/10 |
| Country of manufacture stated (voluntary) | 10/10 |
| Batch and date labelling (mandatory) - not on file | 0/5 |
Capped at 60: mandatory items missing (Analytical constituents declared, Batch and date labelling).
Safety: recall history
Recall and safety-notice history, time-decayed. This dimension is shown alongside the score and never feeds the headline number.
No recalls recorded in our database.
See all current recalls we track.
Evidence: what the brand claims, and what supports it
The claims made on the pack and product page, checked against the declared label. We record claims as stated; "consistent" means our stored label data supports the claim, "contradicted" means it conflicts with it. Functional claims are recorded but never scored.
0/100 · limited — 1 checkable claim: 0 consistent, 1 contradicted.
Contradicted by the label
- "Limited ingredient nutrition with a single, animal protein to avoid common allergens in dogs with food sensitivities" — the declared label says otherwise on single protein.
11 further claims on file that we cannot check against the label.
Limited: at least one claim contradicts the declared label, or a recent upheld ASA ruling applies.
| Claim | Type | Check | Substantiation |
|---|---|---|---|
| Clinically proven antioxidants (on page) | Functional | not checkable | Manufacturer assertion |
| Helps improve digestion & stool quality (on page) | Functional | not checkable | Manufacturer assertion |
| Visible improvement in skin & coat (on page) | Functional | not checkable | Manufacturer assertion |
| Helps maintain a healthy skin barrier (on page) | Functional | not checkable | Manufacturer assertion |
| Supports a healthy immune system (on page) | Functional | not checkable | Manufacturer assertion |
| Clinically tested nutrition to help avoid adverse food reactions (on page) | Functional | not checkable | Manufacturer assertion |
| 100% Satisfaction guarantee (on page) | Functional | not checkable | Manufacturer assertion |
| Provides complete and balanced nutrition for maintenance of adult dogs (on page) | Nutrient | not checkable | Manufacturer assertion |
| U.S. Veterinarians' #1 Recommended Brand (on page) | Content | not checkable | Manufacturer assertion |
| High levels of Omega-3 fatty acids (on page) | High/low level | not checkable | Manufacturer assertion |
| Limited ingredient nutrition with a single, animal protein to avoid common allergens in dogs with food sensitivities (on page) | Content | contradicted | Manufacturer assertion |
| Free from soy protein (on page) | Free-from | not checkable | Manufacturer assertion |
The full scoring method is published. See the methodology for exactly how the headline score and each dimension are calculated.
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