Purina Pro Plan Veterinary Diets HA (Dry)


Rating: ☆☆☆☆☆

Purina Pro Plan Veterinary Diets HA Hydrolyzed Dog Food is not rated due to its intentional therapeutic design.

The Purina Pro Plan Veterinary Diets HA Hydrolyzed product line includes two dry dog foods, each designed to help in the treatment of food sensitivities.

HA is a vegetarian recipe featuring simple proteins and low-allergen carbohydrates. It is typically prescribed to minimize the risk of food based allergic reactions.

The following is a list of recipes available at the time of this review.

  • Purina Pro Plan Veterinary Diets HA
  • Purina Pro Plan Veterinary Diets HA Chicken Flavor

Purina Pro Plan Veterinary Diets HA was selected to represent both products in the line for this review.

Purina Pro Plan Veterinary Diets HA

Dry Dog Food

Estimated Dry Matter Nutrient Content

Protein = 20% | Fat = 9% | Carbs = 63%

Ingredients: Starch, hydrolyzed soy protein isolate, vegetable oil, dicalcium phosphate, partially hydrogenated canola oil preserved with TBHQ, powdered cellulose, corn oil, potassium chloride, guar gum, choline chloride, dl-methionine, salt, magnesium oxide, lecithin, taurine, zinc sulfate, ferrous sulfate, vitamin E supplement, manganese sulfate, niacin, vitamin A supplement, copper sulfate, calcium pantothenate, thiamine mononitrate, riboflavin supplement, garlic oil, vitamin B12 supplement, pyridoxine hydrochloride, folic acid, vitamin D3 supplement, calcium iodate, biotin, menadione sodium bisulfite complex (source of vitamin K activity), sodium selenite

Fiber (estimated dry matter content) = 4.4%

Red items indicate controversial ingredients

Estimated Nutrient Content
Guaranteed Analysis18%8%NA
Dry Matter Basis20%9%63%
Calorie Weighted Basis19%21%60%
Protein = 19% | Fat = 21% | Carbs = 60%

The first ingredient in this dog food is starch. The source of this starch is unknown but it is most likely derived from corn or wheat. Without more information, it’s impossible to adequately judge the quality of this ingredient.

The second ingredient is hydrolyzed soy protein isolate. Soy protein isolate is a highly refined form of soy bean protein with a protein content of about 90%.

In this case, the soy protein has been hydrolyzed which means it has been broken down into its individual amino acid components.

Hydrolyzed protein is valued by veterinary professionals because of its proven and effective hypoallergenic properties.

The third ingredient is vegetable oil, a generic oil of unknown origin. The ratio of omega-6 to omega-3 fats in any oil is nutritionally critical and can vary significantly (depending on the source).

Without knowing more, it’s impossible to judge the quality of an item so vaguely described. However, compared to a named animal fat, a generic vegetable oil cannot be considered a quality ingredient.

The fourth ingredient is dicalcium phosphate, likely used here as a dietary calcium supplement.

The fifth ingredient is partially hydrogenated canola oil, a man-made ingredient similar to margarine or shortening. Hydrogenated oils are (at least, in humans) considered a source of unhealthy trans fats.

Unfortunately, canola can be a controversial item. That’s because it can sometimes (but not always) be derived from genetically modified rapeseed.

Yet others cite the fact canola oil can be a significant source of essential omega-3 fatty acids.

In any case, plant-based oils like canola are less biologically available to a dog than fish oil as a source of quality omega-3 fats.

What’s worse, this hydrogenated canola oil has also been preserved with TBHQ, a suspected cancer-causing agent.

The sixth ingredient is powdered cellulose, a non-digestible plant fiber usually made from the by-products of vegetable processing. Except for the usual benefits of fiber, powdered cellulose prdovides no nutritional value to a dog.

The seventh ingredient is corn oil. Corn oil has one of the highest (and most unfavorable) omega-6 to omega-3 fatty acid ratios of any vegetable oil. Compared to almost any named animal fat, corn oil cannot be considered a quality ingredient.

From here, the list goes on to include a number of other items.

But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this product.

With four notable exceptions

First, garlic can be a controversial item. Although many favor the ingredient for its claimed health benefits, garlic has been linked to Heinz body anemia in dogs.1

So, one must weigh the potential benefits of feeding garlic against its proven tendency to cause subclinical damage to the red blood cells of the animal.

Next, we find no mention of probiotics, friendly bacteria applied to the surface of the kibble after processing to help with digestion.

In addition, the minerals listed here do not appear to be chelated. And that can make them more difficult to absorb. Non-chelated minerals are usually associated with lower quality dog foods.

And lastly, this recipe contains menadione, a controversial form of vitamin K linked to liver toxicity, allergies and the abnormal break-down of red blood cells.

Since vitamin K isn’t required by AAFCO in either of its dog food nutrient profiles, we question the use of this substance in any canine formulation.

Purina Pro Plan
Veterinary Diets HA Hydrolyzed Dog Food
The Bottom Line

Although this is a prescription product, our review has nothing to do with the accuracy of claims made by the manufacturer as to the product’s ability to treat or cure a specific health condition.

So, to find out whether or not this dog food is appropriate for your particular pet, it’s important to consult your veterinarian.

With that understanding…

Judging by its ingredients alone, Purina Pro Plan Veterinary Diets HA looks like a below-average dry product.

But ingredient quality by itself cannot tell the whole story. We still prefer to estimate the product’s meat content before concluding our report.

The dashboard displays a dry matter protein reading of 20%, a fat level of 9% and estimated carbohydrates of about 63%.

As a group, the brand features an average protein content of 20% and a mean fat level of 10%. Together, these figures suggest a carbohydrate content of 62% for the overall product line.

And a fat-to-protein ratio of about 49%.

Below-average protein. Below-average fat. And above-average carbs when compared to a typical dry dog food.

Because of its hypoallergenic design, this particular recipe contains no meat or any other source of animal protein. So, all essential amino acids appear to be provided by the hydrolyzed protein ingredient.

Bottom line?

Purina Pro Plan Veterinary Diets HA is a plant-based dry dog food using hydrolyzed soy as its main source of dietary protein.

Purina Dog Food
Recall History

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Notes and Updates

11/02/2016 Last Update

  1. Yamato et al, Heinz Body hemolytic anemia with eccentrocytosis from ingestion of Chinese chive (Allium tuberosum) and garlic (Allium sativum) in a dog, Journal of the American Animal Hospital Association 41:68-73 (2005)