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Supreme Source vs Hill's Science Diet

Supreme Source vs. Hill's Science Diet

In this comparison article for Supreme Source vs Hill's Science Diet, we'll highlight the key differences between these two pet food brands. To properly compare Supreme Source and Hill's Science Diet, we'll use up-to-date nutritional and price information.

There are many factors to consider when choosing the best pet food brand for your pet. Factors such as ingredient quality, guaranteed analysis, product safety, brand history, and cost are among the most important factors to consider.

Throughout this Hill's Science Diet vs Supreme Source comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Supreme Source Review Page or Hill's Science Diet Review Page.

Guaranteed Analysis: Hill's Science Diet vs. Supreme Source

According to AAFCO, all pet food labels must provide a guaranteed analysis of nutrient content. The analysis must provide guaranteed minimum percentages of crude protein and crude fat, and maximum percentages of crude fiber and moisture.

All percentages used in this comparison are averages reported on a dry matter basis.

Supreme Source Dog Food vs. Hill's Science Diet Dog Food

Dry Dog Food Supreme Source Hill's Science Diet
Crude Protein 28.9% 24.7%
Crude Fat 12.8% 14.6%
Crude Fiber 9.0% 4.1%

Crude Protein Comparison For Dog Food

Protein is an extremely important part of your dog's diet. Without sufficient protein, dogs can develop a wide-range of serious health problems.

Our analysis shows that Supreme Source guarantees 4.22% more protein than Hill's Science Diet dry dog food recipes.


Crude Fat Comparison For Dog Food

Fats are an absolutely vital component of a balanced canine diet. Not only do fats provide energy, but they also serve important roles in the normal development and function of your dog's body. For example, fats help dogs produce prostaglandins, which reduce inflammation among many other significant functions.

Supreme Source and Hill's Science Diet both provide roughly the same amount of crude fat.


There is a relatively large difference between the fiber content of Supreme Source and Hill's Science Diet. On average, Hill's Science Diet dry dog food recipes contain 4.95% less fiber than Supreme Source recipes.

Supreme Source Cat Food vs. Hill's Science Diet Cat Food

Dry Cat Food Supreme Source Hill's Science Diet
Crude Protein 38.9% 35.5%
Crude Fat 16.7% 18.2%
Crude Fiber 5% 5.5%

Crude Protein Comparison For Cat Food

Protein is an extremely important part of your cat's diet. Without sufficient protein, cats can develop a wide-range of serious health problems.

According to our data, Supreme Source guarantees 3.38% more protein than Hill's Science Diet. Although this difference is relatively small, it's still a notable difference.


Crude Fat Comparison For Cat Food

There are many ways in which dietary fat contributes to the overall health of our feline friends. Here is a short list of benefits provided by fats (not exhaustive):

  • Fats help with the digestion and absorption of fat-soluble vitamins
  • Reduce inflammation associated with arthritis
  • Slow the growth of yeast infections
  • Prevent or reduce the likelihood of certain heart problems.
  • Aid in the development of the retina and visual cortex.

There is a relatively insignificant difference between the crude fat content of the two brands.


Both brands provide roughly the same amount of crude fiber.

Supreme Source Pet Food Ingredients vs. Hill's Science Diet Pet Food Ingredients

Supreme Source and Hill's Science Diet both use the following controversial ingredients in many of their products:

Pea Protein
Tomato Pomace

Here are some of the controversial ingredients used only by Supreme Source.

Poultry Fat (Preserved With Mixed Tocopherols)

Here are some of the controversial ingredients used only by Hill's Science Diet.

Liver
Caramel
Corn Flour
Iron Oxide
Pork Plasma
Poultry Fat
Animal Liver
Brewers Rice
Wheat Gluten
Caramel Color
Beef By-Products
Corn Gluten Meal
Pork By-Products
Whole Grain Corn
Whole Grain Wheat
Powdered Cellulose
Dried Tomato Pomace
Pea Protein Concentrate
Soybean Protein Isolate

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Supreme Source and Hill's Science Diet both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Supreme Source & Hill's Science Diet?

According to our records, Supreme Source has never been recalled.

Hill's Science Diet has been recalled 2 times.

  • Jan. 31, 2019: elevated levels of Vitamin D
  • March 20, 2019: elevated levels of Vitamin D

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Supreme Source Hill's Science Diet
Per Pound $1.77 $2.18
Per Calorie $0.0012 $0.0014
Dry Cat Food Supreme Source Hill's Science Diet
Per Pound $2.84 $3.15
Per Calorie $0.0017 $0.0019

The average cost-per-lb is heavily influenced by the varying amounts of moisture present in each brand's food products (wet vs. dry food, dry vs. freeze-dried food, etc). However, the average cost-per-kcal eliminates the influence of moisture. Therefore, the average cost-per-kcal is the better metric to consider.

If you'd like to calculate the average cost-per-day or cost-pet-year of feeding Supreme Source or Hill's Science Diet, input your pet's weight into our cost analyzer widget.

Averages price data can identify whether or not there exists a significant price difference between two brands. However, the actual price that you'll pay for Supreme Source or Hill's Science Diet will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Supreme Source and Hill's Science Diet. In addition, we currently have some great coupons for our readers.


Disclosure: PawDiet has an affiliate relationship with stores featured (or linked-to) in this article. We are compensated for referring customers. Thank you for shopping with our retail partners!

Where To Buy Supreme Source Pet Foods

You can purchase Supreme Source pet foods from the following stores:


10 Recipes In-Stock Today

Where To Buy Hill's Science Diet Pet Foods

You can purchase Hill's Science Diet pet food products from these retailers:


136 Recipes In-Stock Today

107 Recipes In-Stock Today

130 Recipes In-Stock Today

35 Recipes In-Stock

Type Of Pet Foods Available

Product Supreme Source Hill's Science Diet
Dry Dog Food 4 Recipes 32 Recipes
Wet Dog Food 32 Recipes
Dog Treats 4 Treats 15 Treats
Dry Cat Food 2 Recipes 19 Recipes
Wet Cat Food 38 Recipes
Cat Treats 3 Treats

Compare Pet Food Prices Across Multiple Pet Stores