Hill's Prescription Diet R-d (Dry) Review

Hill's Prescription Diet Dry Cat Food Review


Quick Analysis

Ingredients:

Nutrition:

Potential Allergens: corn and soy

Est. Calories: 302 cal/100g

Price: $$$$


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Hill's Prescription Diet R-d (Dry) is a veterinary cat food formula; it's ingredient and nutritional composition is highly specialized. In this case, comparing it to other general nutrition cat food products is not recommended as the products serve different purposes. The scores above are not an indication of the product's ability to address it's indicated purpose.

As always, please contact your veterinarian before feeding your cat a veterinary diet.


Ingredient Analysis

When evaluating a cat food, the first five ingredients can tell you a lot about the quality of a product as they make up the bulk of the product. Ideally, you're looking for quality protein sources with a minimum of cheap starches, fillers or by-products. Continuing down the ingredient list, look for ingredients that resemble real food with a minimal number of unpronounceable chemicals - the same as you would for human food.

Hill's Prescription Diet R-d (Dry) includes the following:

Quality Ingredients

None

Questionable Ingredients

  • brewers rice
  • chicken by-product meal
  • corn gluten meal
  • soybean oil

Potential Allergens

  • corn gluten meal
  • soybean oil

Note - a bolded ingredient in the above tables indicates it is one of the first five ingredients listed by the product manufacturer.

In this case, Hill's Prescription Diet R-d (Dry) includes chicken by-product meal. By-products are typically considered an inferior, lesser quality ingredient in cat food.

Additionally, Hill's Prescription Diet R-d (Dry) also contains as top ingredients brewers rice and corn gluten meal. These types of ingredients are typically used as bulk-adding fillers and are not required in your cat's diet. However, they are sometimes used to help maintain the kibble shape in dry foods.

Allergen alert: This product contains corn gluten meal and soybean oil which may be problematic for cats who suffer from corn or soy food allergies.



Nutritional Analysis*

Compared to the other 2849 cat foods in our database, Hill's Prescription Diet R-d (Dry) has:

  • significantly less protein than average
  • significantly more carbohydrates than average
  • significantly less fat than average
  • significantly more fiber than average
  • significantly less moisture than an equivalent wet food
In general, cats have been shown to do better with a higher protein, medium fat, lower carb diet with sufficient moisture. However, specialty diets as recommended by your veterinarian may prioritize a different nutritional breakdown.

Calorie Breakdown

Using the calculations provided by the AAFCO, Hill's Prescription Diet R-d (Dry) has approximately 302 calories per 100g (85 calories/ounce), which is considerably fewer calories compared to the average of the other dry cat foods in the CatFoodDB.


All the product information on this page is based on data collected from the manufacturer's product website as retrieved on September 6, 2021.

The authoritative source for ingredient lists and nutritional analysis for any pet food is always the pet food manufacturer.


Ingredients

Ingredients as published by the cat food manufacturer:

Brewers Rice, Chicken By-product Meal, Corn Gluten Meal, Powdered Cellulose, Chicken Liver Flavor, Soybean Oil, Lactic Acid, Calcium Sulfate, Potassium Sulfate, Choline Chloride, Dl-methionine, Taurine, Glyceryl Monostearate, Potassium Chloride, Vitamins (vitamin E Supplement, L-ascorbyl-2-polyphosphate (source Of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Iodized Salt, L-carnitine, L-threonine, Minerals (ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols For Freshness, Natural Flavors, Beta-carotene


Guaranteed Analysis

Nutritional information as published by the cat food manufacturer.*

Protein: (min)
33.3%
Fat: (min)
8.2%
Fiber: (max)
13.3%
Carbs: (est)
33.1%
Ash: (est)
5.8%
Moisture: (max)
6.3%

Dry Matter Analysis

The manufacturer's published guaranteed analysis values normalized for moisture content.

Protein: (min)
36%
Fat: (min)
9%
Fiber: (max)
14%
Carbs: (est)
35%
Ash: (est)
6%
Calories: (est)
302/100g

*Note that nutritional percentages reported are only estimated values, and are indicated as such as (est). Each cat food manufacturer is required by law to publish a Guaranteed Analysis, which defines each product's maximum values of fiber and moisture in addition to the minimum values of protein and fat contained within. Optionally, manufacturers may also publish a product's ash content. When they are not published an average of 3% ash for wet food, and 6% ash for dry food, will be used. Because exact nutritional percentages are not available and all calculated values (including carbohydrate percentages and calorie amounts) are determined using these minimum and maximum published values and therefore may differ from actual values. Any other manufacturer published values in a product's Guaranteed Analysis is done at the manufacture's discretion, and is not used in any of the calculations done by CatFoodDB.

Although a high score may be indicative of a higher-quality product it is not a guarantee. Similarly, a low score may or may not indicate an inferior product. The best food for your cat is the one that meets their individual needs.


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