Iams vs NutriSource

Iams vs. NutriSource

In this comparison article for Iams vs NutriSource, we'll highlight the key differences between these two pet food brands. To properly compare Iams and NutriSource, 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 NutriSource vs Iams comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Iams Review Page or NutriSource Review Page.

Guaranteed Analysis: NutriSource vs. Iams

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.

Iams Dog Food vs. NutriSource Dog Food

Dry Dog FoodIamsNutriSource
Crude Protein27.6%28.9%
Crude Fat14.9%16.8%
Crude Fiber5.2%7.1%
Wet/Canned Dog FoodIamsNutriSource
Crude Protein40.9%43.4%
Crude Fat23.4%33.0%
Crude Fiber5.4%7.2%

Crude Protein Comparison For Dog Food

Dogs require twenty-two amino acids to sustain life. Twelve of these amino acids are synthesized naturally, the remaining ten are consumed. Protein is the nutrient which provides some or all of these ten essential amino acids.

As you can see, Iams and NutriSource guarantee a similar amount of crude protein. For wet dog foods, NutriSource typically provides a little more protein (about 2.47% more).

Crude Fat Comparison For Dog Food

Like protein, fats are an essential part of a dog's body. Fats are needed for the proper development and function of the canine body.

Iams and NutriSource both provide roughly the same amount of crude fat. For wet dog foods, NutriSource provides significantly more fat (about 9.68% more).

There is a relatively insignificant difference between the crude fiber content of the two brands. With regards to wet dog food, NutriSource and Iams also provide roughly the same amount of crude fiber.

Iams Cat Food vs. NutriSource Cat Food

Dry Cat FoodIamsNutriSource
Crude Protein35.7%36.4%
Crude Fat15.9%17.9%
Crude Fiber4.6%7.8%
Wet/Canned Cat FoodIamsNutriSource
Crude Protein46.7%46.4%
Crude Fat21.8%31.4%
Crude Fiber4.9%5.2%

Crude Protein Comparison For Cat Food

Cats require twenty-two amino acids to sustain life. Eleven of these amino acids are synthesized naturally, the remaining eleven are consumed. Protein is the nutrient which provides some or all of these eleven essential amino acids.

Both brands provide roughly the same amount of crude protein. With regards to wet cat food, Iams and NutriSource also provide roughly the same amount of crude protein.

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):

  • Help transport nutrients across cell membranes
  • Fats produce metabolites, which help control inflammation
  • Maintain healthy blood pressure
  • Slow the growth of yeast infections
  • Fats improve the taste/texture of food.

If you look at the average percentages of crude fat, you'll notice that NutriSource typically guarantees 2.02% more fat. This is a fairly small difference between NutriSource and Iams, but still worth mentioning. In addition, NutriSource wet cat foods also provide more fat than Iams wet foods.

According to our data, NutriSource guarantees 3.27% more fiber than Iams. Although this difference is relatively small, it's still a notable difference. For wet cat foods, NutriSource and Iams provide roughly the same amount of fiber.

Iams Pet Food Ingredients vs. NutriSource Pet Food Ingredients

Iams and NutriSource both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein
Brewers Rice
Dried Tomato Pomace

Here are some of the controversial ingredients used only by Iams.

Beet Pulp
Corn Meal
Corn Grits
Iron Oxide
Fish Digest
Ground Corn
Wheat Gluten
Caramel Color
Vegetable Oil
Feeding Oatmeal
Poultry Giblets
Corn Gluten Meal
Meat By-Products
Powdered Cellulose
Chicken By-Products
Dried Meat By-Products
Chicken By-Product Meal
Ground Whole Grain Corn
Poultry By-Product Meal
Animal Fat (Preserved With Mixed Tocopherols)
Poultry Fat (Preserved With Mixed Tocopherols)

Here are some of the controversial ingredients used only by NutriSource.

White Rice

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

Iams and NutriSource both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

Here are some of the harmful ingredients used only by Iams.

Blue 2
Red 40
Yellow 5
Yellow 6
Added Color

Product Safety: Recall History of Iams & NutriSource?

Iams has been recalled 2 times.

  • Aug. 14, 2013: Salmonella
  • July 30, 2010: Salmonella

According to our records, NutriSource has never been recalled.

Price Comparison: Which Brand Is More Expensive?

Dry Dog FoodIamsNutriSource
Per Pound$1.52$2.64
Per Calorie$0.0009$0.0015
Dry Cat FoodIamsNutriSource
Per Pound$2.03$3.25
Per Calorie$0.0012$0.0018
Wet Dog FoodIamsNutriSource
Per Pound$1.90$3.21
Per Calorie$0.0038$0.0061
Wet Cat FoodIamsNutriSource
Per Pound$6.97$6.39
Per Calorie$0.0151$0.0119

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 Iams or NutriSource, 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 Iams or NutriSource will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Iams and NutriSource. 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 Iams Pet Foods

You can purchase Iams pet foods from the following stores:

33 Recipes In-Stock Today

15 Recipes In-Stock Today

24 Recipes In-Stock Today

Where To Buy NutriSource Pet Foods

You can purchase NutriSource pet food products from these retailers:

75 Recipes In-Stock Today

30 Recipes In-Stock Today

Type Of Pet Foods Available

Dry Dog Food24 Recipes41 Recipes
Wet Dog Food8 Recipes13 Recipes
Dog TreatsNone11 Treats
Dry Cat Food13 Recipes8 Recipes
Wet Cat Food13 Recipes10 Recipes
Cat Treats2 TreatsNone

Top Rated Iams Recipes

Dog Food
Minichunks Chicken & Whole Grains Recipe
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Dog Food
Proactive Health Pate With Lamb and Rice
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Cat Food
Proactive Health Healthy Adult With Chicken
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Cat Food
Perfect Portions Salmon Recipe Pate For Healthy Adult Cats
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Top Rated NutriSource Recipes

Dog Food
Pure Vita Turkey & Sweet Potato Entrée
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Dog Food
Wet Dog Food Chicken, Lamb & Ocean Fish Recipe
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Cat Food
Pure Vita Chicken & Peas Entree
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Cat Food
Grain Free Cat Food Country Select
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