Hill's Prescription Diet Dog Food Ingredients

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Hill's Prescription Diet manufactures roughly 65 different dog food products. Each product utilizes a unique set of ingredients to achieve a desired nutritional profile.

In this article, we'll explore Hill's Prescription Diet ingredients and answer many of the most common questions.

As of right now, our records indicate that Hill's Prescription Diet uses roughly 141 different ingredients.

First 5 Ingredients

Dog food ingredients in the United States are listed in descending order of pre-cooked weight. The first 5 ingredients typically constitute a significant portion of the recipe.

For Hill's Prescription Diet, these are the most common ingredients found within the first 5 dog food ingredients.

  1. water
  2. pork liver
  3. carrot
  4. rice
  5. rice

As you can see, the most common first ingredient in Hill's Prescription Diet is water. The most common 2nd ingredient is pork liver, followed by carrot, rice, and rice.

Artificial Food Coloring Dyes

Hill's Prescription Diet does not use any artificial food coloring dyes. According to our records, none of the 65 Hill's Prescription Diet dog foods contain artificial food dyes.

Artificial food coloring dyes are unnecessary and potentially harmful ingredients. In general, we not not recommend feeding any pet foods that contain artificial dyes.

In 2010, the CSPI raised serious concerns regarding the safety of many artificial dyes. Most of the studies referenced by the CSPI involved prolonged or excessive consumption. Since most dogs consume the same foods throughout their lives, concerns raised by the CSPI are alarming to say the least.

To read more about Artificial Food Dyes, click here.

Animal By-Products

Hill's Prescription Diet does indeed use animal by-products. More specifically, 3 animal by-product ingredients were found during our analysis of Hill's Prescription Diet dog food ingredients.

According to AAFCO, by-products are defined as the non-rendered, clean parts, other than meat, derived from slaughtered mammals. In other words, animal by-products are the leftover ingredients that humans typically do not consume (lung, heart, tongue, stomach, intestine, blood, etc).

Many consumers have equated animal by-products with slaughterhouse waste. Animal by-products are still very controversial. Most premium brands have abandoned them in favor of specific named organ ingredients (duck liver, chicken heart, etc).

If you must feed a product with animal by-products, ensure that the specific animal source is specified. In other words, avoid ingredients such as meat by-products or poultry by-products.

pork by-products
5 Recipes

By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, pork by-products contain nearly all parts of pork which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, pork by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as pork by-products, supply many important nutrients required by dogs.

The following recipes contain pork by-products:

chicken by-product meal
10 Recipes

Chicken by-product meal is produced by cooking chicken by-products using a process called rendering. By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, chicken by-products contain nearly all parts of chickens which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, chicken by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as chicken by-products, supply many important nutrients required by dogs.

The following recipes contain chicken by-product meal:

beef by-products
1 Recipes

By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, beef by-products contain nearly all parts of the beef which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, beef by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as beef by-products, supply many important nutrients required by dogs.

The following recipes contain beef by-products:

Anonymous Meat Ingredients

Anonymous meats are inexpensive low-quality ingredients that can come from practically any animal. These type of ingredients are often used to produce very inexpensive dog foods.

In general, we prefer ingredients which specify the animal source used to derive the ingredient. For example, ingredients such as duck fat are much better than animal fat or poultry fat.

In our analysis, we've looked through all 141 Hill's Prescription Diet ingredients. According to our data, Hill's Prescription Diet does not contain any anonymous animal-based ingredients.

Controversial Ingredients

In most cases, ingredients which are given the controversial classification can be substituted with higher-quality alternatives. You should evaluate each controversial ingredient independently to see if there is truly a valid cause for concern.

Keep in mind, certain sacrifices often must be made to produce dog foods at a reasonable price. In general, the more expensive the product, the fewer controversial ingredients you'll find.

In our analysis, we've identified 15 controversial ingredients inside Hill's Prescription Diet products. These controversial ingredients are listed below. Click on each ingredient for more information.

whole grain wheat
9 Recipes

Whole grain wheat contains the entire grain of wheat (the germ, bran, and endosperm). Wheat is the second most-produced cereal grain in the world (corn is the first). Although wheat is a controversial ingredient, it is not necessarily undesirable because it provides dietary fiber and many other nutrients. However, wheat contains a notable amount of plant based protein, which is inferior to meat based protein and therefore an undesirable substitution.</p><p>Wheat is also one of the most common ingredients to cause food allergies or intolerance. However, grains such as wheat are typically low offenders in comparison to certain protein sources (such as beef).

The following recipes contain whole grain wheat:

powdered cellulose
49 Recipes

Powdered cellulose is produced from minuscule pieces of wood pulp and plant fibers. Other than its fiber content, powdered cellulose lacks any nutritional contribution.

The following recipes contain powdered cellulose:

brewers rice
21 Recipes

Brewer's rice is the small fragments of rice kernel that are separated from the larger kernels of milled rice. The fragments do not contain the same nutrition profile of the whole kernel and therefore brewer's rice is a lower quality grain. Brewer's rice is typically regarded as an inexpensive and low quality filler.

The following recipes contain brewers rice:

pea protein
4 Recipes

Pea protein is produced by removing the starchy parts of peas. Pea protein is considered controversial because it provides a substantial plant based protein boost. This boost is undesirable because plant based protein is typically lower in biological value when compared to meat based proteins.

The following recipes contain pea protein:

whole grain corn
23 Recipes

Whole grain corn is the entire corn kernel (the germ, bran, and endosperm). Corn is a cereal grain which provides a modest amount of vitamins, minerals, and plant based protein. It also happens to be one of the most controversial ingredients in dog food.</p><p>Proponents of corn claim that corn is highly digestible and an excellent source of protein, energy, vitamins, minerals, and essential fatty acids.</p><p>Opponents however believe that positive claims in regards to corn are either half-truths or completely false, we'll discuss a few of the opposing arguments.</p><p>In regards to digestibility, the claims of "highly digestible" are only true if corn is processed into a meal or flour and subsequently cooked. In regards to the protein contribution, we must note that corn is a plant based protein which does not contain all of the necessary amino acids required by dogs to sustain life. Therefore substituting corn for meat is an unsuitable substitution and actually degrades the overall protein quality of the product.</p><p>Finally, we'll discuss the claims about vitamins and minerals in corn. Although corn does provide many vitamins and minerals, it not necessarily an exceptional ingredient in this regards. There are many other ingredients which are more complete and biologically appropriate. Therefore the usage of corn as the primary ingredient in dog food should certainly warrant further questioning.

The following recipes contain whole grain corn:

caramel color
6 Recipes

Caramel color is a concentrated form of caramel, a natural food colorant. Caramel color has been linked to cancer in laboratory animals. Since our pets do not care about food color, caramel color is an unnecessary addition with possible health risks.

The following recipes contain caramel color:

canola oil
1 Recipes

Canola oil is a plant-derived oil from the seeds of canola plants. Although fat is an essential component of any diet, canola oil is controversial in pet food. Proponents claim that canola oil provides a better fat profile in comparison to other plant based oils. However, opponents claim that canola oil is typically produced with genetically modified rapeseed and that rapeseed oil has multiple adverse health affects.

The following recipes contain canola oil:

pork by-products
5 Recipes

By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, pork by-products contain nearly all parts of pork which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, pork by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as pork by-products, supply many important nutrients required by dogs.

The following recipes contain pork by-products:

chicken by-product meal
10 Recipes

Chicken by-product meal is produced by cooking chicken by-products using a process called rendering. By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, chicken by-products contain nearly all parts of chickens which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, chicken by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as chicken by-products, supply many important nutrients required by dogs.

The following recipes contain chicken by-product meal:

corn flour
1 Recipes

Corn flour a ground cereal grain which provides a modest amount of vitamins, minerals, and plant based protein. It also happens to be one of the most controversial ingredients in dog food.</p><p>Proponents of corn claim that corn is highly digestible and an excellent source of protein, energy, vitamins, minerals, and essential fatty acids.</p><p>Opponents however believe that positive claims in regards to corn are either half-truths or completely false, we'll discuss a few of the opposing arguments.</p><p>In regards to digestibility, the claims of "highly digestible" are only true if corn is processed into a meal or flour and subsequently cooked. In regards to the protein contribution, we must note that corn is a plant based protein which does not contain all of the necessary amino acids required by dogs to sustain life. Therefore substituting corn for meat is an unsuitable substitution and actually degrades the overall protein quality of the product.</p><p>Finally, we'll discuss the claims about vitamins and minerals in corn. Although corn does provide many vitamins and minerals, it not necessarily an exceptional ingredient in this regards. There are many other ingredients which are more complete and biologically appropriate. Therefore the usage of corn as the primary ingredient in dog food should certainly warrant further questioning.

The following recipes contain corn flour:

beef by-products
1 Recipes

By-products are defined by AAFCO as the "non-rendered, clean parts, other than meat, derived from slaughtered mammals." Thus, beef by-products contain nearly all parts of the beef which are typically not consumed by humans. These parts include the liver, lung, spleen, kidney, stomach, blood, intestine, bone, etc.</p><p>Like other meat by-products, beef by-products are considered controversial, mainly because they are inexpensive ingredients which consumers have equated with slaughterhouse waste. However, manufactures and many experts claim that animal by-products are unjustly criticized. Proponents state that "named" by-products, such as beef by-products, supply many important nutrients required by dogs.

The following recipes contain beef by-products:

soybean protein isolate
2 Recipes

Soy protein isolate is a highly refined/purified form of soy bean protein. Roughly 90% of soy protein isolate is protein. The inclusion of non-meat protein typically degrades the overall quality of protein in the recipe. This degradation is due to the inferior amino acid profile of plant based proteins.

The following recipes contain soybean protein isolate:

Potentially Harmful Ingredients

Harmful ingredients are those which have been linked to adverse health effects. In general, we do not recommend feeding any product which contains any harmful ingredients.

There are certain situations where these ingredients may be necessary. We always recommend contacting Hill's Prescription Diet for further clarification regarding any harmful or controversial ingredient.

We have identified 1 harmful ingredient used in certain Hill's Prescription Diet recipes. To learn more, click on the ingredient's name.

menadione sodium bisulfite complex
8 Recipes

Menadione sodium bisulfite complex is a synthetic version of vitamin K that has been linked to many health concerns. Research has suggested possible toxic reactions in liver cells and red blood cells among other serious problems. In fact, one large chemical supplier warns, "The substance is toxic to kidneys, lungs, liver, mucous membranes. Repeated or prolonged exposure to the substance can produce target organs damage."

The following recipes contain menadione sodium bisulfite complex:

Hill's Prescription Diet Dog Food Ingredient Lists

Hill's Prescription Diet Aging Care g/d Chicken Flavor

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Hill's Prescription Diet Brain Aging Care b/d Chicken Flavor

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Hill's Prescription Diet Dental Care t/d Chicken Flavor

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Hill's Prescription Diet Dental Care t/d Small Bites Chicken Flavor

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Hill's Prescription Diet Derm Defense Environmental Sensitivities Chicken Flavor

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Hill's Prescription Diet Digestive Care i/d Chicken Flavor

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Hill's Prescription Diet Digestive Care i/d Low Fat Chicken Flavor

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Hill's Prescription Diet Digestive Care i/d Sensitive Rice & Egg Formula

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Hill's Prescription Diet Digestive Care i/d Small Bites Chicken Flavor

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Hill's Prescription Diet Digestive Care i/d Stress Chicken Flavor

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Hill's Prescription Diet Multi-Benefit w/d Chicken Flavor

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Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care With Chicken For Dogs

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Hill's Prescription Diet Heart Care h/d Chicken Flavor

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Hill's Prescription Diet Joint Care j/d Chicken Flavor

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Hill's Prescription Diet Joint Care j/d Small Bites Chicken Flavor

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Hill's Prescription Diet k/d + Mobility Chicken Flavor

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Hill's Prescription Diet Kidney Care k/d With Chicken

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Hill's Prescription Diet Kidney Care k/d With Lamb

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Hill's Prescription Diet Liver Care l/d Chicken Flavor

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Hill's Prescription Diet Metabolic + Mobility Chicken Flavor

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Hill's Prescription Diet c/d Multicare + Metabolic Chicken Flavor

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Hill's Prescription Diet Metabolic Weight Management Chicken Flavor

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Hill's Prescription Diet Metabolic Weight Management Lamb Meal & Rice Formula

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Hill's Prescription Diet Skin/Food Sensitivities d/d Potato & Duck Formula

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Hill's Prescription Diet Skin/Food Sensitivities d/d Potato & Salmon Formula

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Hill's Prescription Diet Skin/Food Sensitivities d/d Potato & Venison Formula

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Hill's Prescription Diet Skin/Food Sensitivities z/d Original Flavor

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Hill's Prescription Diet Skin/Food Sensitivities z/d Small Bites Original Flavor

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Hill's Prescription Diet Urinary Care c/d Multicare Chicken Flavor

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Hill's Prescription Diet Urinary Care u/d Original

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Hill's Prescription Diet Weight Reduction r/d Chicken Flavor

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Hill's Prescription Diet Aging Care g/d Turkey Flavor

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Hill's Prescription Diet Derm Defense Environmental Sensitivities Chicken & Vegetable Stew

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Hill's Prescription Diet Digestive Care i/d Chicken & Vegetable Stew

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Hill's Prescription Diet Digestive Care i/d Low Fat Original Flavor

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Hill's Prescription Diet Digestive Care i/d Low Fat Rice, Vegetable & Chicken Stew

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Hill's Prescription Diet Digestive Care i/d Stress Rice, Vegetable & Chicken Stew

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Hill's Prescription Diet Digestive Care i/d With Turkey

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Hill's Prescription Diet Multi-Benefit w/d Vegetable & Chicken Stew

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Hill's Prescription Diet Multi-Benefit w/d Chicken Flavor

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Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care Chicken & Vegetable Stew For Dogs

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Hill's Prescription Diet Heart Care h/d With Chicken

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Hill's Prescription Diet Joint Care j/d With Lamb

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Hill's Prescription Diet k/d + Mobility Chicken & Vegetable Stew

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Hill's Prescription Diet Kidney Care k/d Beef & Vegetable Stew

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Hill's Prescription Diet Kidney Care k/d Chicken & Vegetable Stew

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Hill's Prescription Diet Kidney Care k/d With Chicken

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Hill's Prescription Diet Kidney Care k/d With Lamb

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Hill's Prescription Diet Liver Care l/d Original Flavor

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Hill's Prescription Diet Metabolic + Mobility Vegetable & Tuna Stew

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Hill's Prescription Diet Metabolic Weight Management Chicken Flavor

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Hill's Prescription Diet Metabolic Weight Management Vegetable & Beef Stew

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Hill's Prescription Diet Metabolic Weight Management Vegetable & Chicken Stew

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Hill's Prescription Diet Skin/Food Sensitivities d/d Duck Formula

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Hill's Prescription Diet Skin/Food Sensitivities d/d Salmon Formula

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Hill's Prescription Diet Skin/Food Sensitivities z/d Original Flavor

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Hill's Prescription Diet Urinary Care c/d Multicare Chicken & Vegetable Stew

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Hill's Prescription Diet Urinary Care c/d Multicare Chicken Flavor

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Hill's Prescription Diet Urinary Care s/d Original Flavor

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Hill's Prescription Diet Urinary Care u/d Chicken Flavor

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Hill's Prescription Diet Weight Reduction r/d Original

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Hill's Prescription Diet Dog Treats Hypo Treats For Dogs With Food Sensitivities

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Hill's Prescription Diet Dog Treats Original

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Hill's Prescription Diet Dog Treats Soft Baked

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Hill's Prescription Diet Dog Treats Metabolic

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