Soy Protein

info

This concern applies to dogs specifically.

Soy Protein is a widely used pet food ingredient for dogs. Based on veterinary research, this ingredient has generally considered low-risk but good to know about. Below, we explain what we found and list the products that include it.

Why it's flagged

Soy is one of the more common food allergens in dogs and contains phytoestrogens (isoflavones) that may affect hormone levels with long-term exposure. Dogs clear these compounds better than cats, but it's worth knowing about if your dog has sensitivities.

Sources

  • White et al. 2004, Am J Veterinary Research (T4 increase in cats on soy)
  • Redmon et al. 2016, Xenobiotica (cats bottom 3 of 13 species for clearance)
  • Court & Freeman 2002, Am J Veterinary Research (soy in 57% of cat foods)
  • van Hoek et al. 2015, J Feline Medicine and Surgery (critical review)
  • Mueller et al. 2016, BMC Veterinary Research (canine allergen prevalence)

We found Soy Protein in 589 of the products we analyzed.

Products containing Soy Protein

Purina ONE Natural High Protein True Instinct with Real Beef & Salmon

Natural High Protein True Instinct with Real Beef & Salmon

Purina ONE

gold #39 of 1163 $0.13/oz
Cesar Loaf in Sauce Rotisserie Chicken & Filet Mignon Flavors Variety Pack Grain-Free Small Breed

Loaf in Sauce Rotisserie Chicken & Filet Mignon Flavors Variety Pack Grain-Free Small Breed

Cesar

silver #81 of 190 $0.34/oz
Michu Rainbow Mousse Chicken with Coconut & Shrimp Flavor Pate

Rainbow Mousse Chicken with Coconut & Shrimp Flavor Pate

Michu

bronze #1697 of 1701 $1.42/oz
Purina Pro Plan Vital Systems Seafood Entree in

Vital Systems Seafood Entree in

Purina Pro Plan

bronze #1630 of 1701 $0.65/oz
Rachael Ray Nutrish Real Chicken & Veggies Recipe Dry Small Breed

Real Chicken & Veggies Recipe Dry Small Breed

Rachael Ray Nutrish

gold #204 of 1163 $0.10/oz
Friskies Savory Shreds with Salmon in Sauce

Savory Shreds with Salmon in Sauce

Friskies

bronze #1580 of 1701 $0.16/oz
Hill's Science Diet Adult Chicken & Barley Recipe

Adult Chicken & Barley Recipe

Hill's Science Diet

bronze #998 of 1163 $0.16/oz
Purina Beneful Healthy Puppy with Farm Raised Chicken High Protein

Healthy Puppy with Farm Raised Chicken High Protein

Purina Beneful

gold #200 of 1163 $0.07/oz
Chewy Made Digestive Health Chicken & Brown Rice Recipe

Digestive Health Chicken & Brown Rice Recipe

Chewy Made

silver #460 of 1163 $0.08/oz
Fancy Feast Gourmet Filet Mignon Flavor with Real Seafood & Shrimp

Gourmet Filet Mignon Flavor with Real Seafood & Shrimp

Fancy Feast

bronze #493 of 558 $0.17/oz
Purina Pro Plan Weight Management Chicken & Rice Entree in Gravy

Weight Management Chicken & Rice Entree in Gravy

Purina Pro Plan

bronze #1594 of 1701 $0.66/oz
Tiny Tiger Shreds with Chicken in Gravy

Shreds with Chicken in Gravy

Tiny Tiger

bronze #1156 of 1701 $0.14/oz
Fancy Feast Gravy Lovers Chicken & Beef Feast in Gravy

Gravy Lovers Chicken & Beef Feast in Gravy

Fancy Feast

bronze #1430 of 1701 $0.32/oz
Fancy Feast Grilled Ocean Whitefish & Tuna Feast in Gravy

Grilled Ocean Whitefish & Tuna Feast in Gravy

Fancy Feast

bronze #1475 of 1701 $0.32/oz
Purina Pro Plan Adult Ocean Whitefish & Tuna Entree in Sauce

Adult Ocean Whitefish & Tuna Entree in Sauce

Purina Pro Plan

bronze #1254 of 1701 $0.43/oz
Purina ONE +Plus Sensitive Skin & Stomach Adult Natural Digestive

+Plus Sensitive Skin & Stomach Adult Natural Digestive

Purina ONE

silver #326 of 558 $0.14/oz
9 Lives Turkey Favorites Variety Pack

Turkey Favorites Variety Pack

9 Lives

bronze #328 of 354 $0.14/oz
Purina ONE +Plus Adult Digestive Health Formula

+Plus Adult Digestive Health Formula

Purina ONE

silver #657 of 1163 $0.10/oz
Purina ONE LiveClear Allergen-Reducing Formula Chicken Flavor

LiveClear Allergen-Reducing Formula Chicken Flavor

Purina ONE

silver #350 of 558 $0.33/oz
Dog Chow High Protein Lamb in Savory Gravy

High Protein Lamb in Savory Gravy

Dog Chow

gold #147 of 861 $0.15/oz
Hill's Science Diet Puppy Small Breed & Mini Breed Chicken Meal & Brown Rice Recipe

Puppy Small Breed & Mini Breed Chicken Meal & Brown Rice Recipe

Hill's Science Diet

silver #501 of 1163 $0.24/oz
Purina ONE True instinct with A Blend of Real Turkey & Venison

True instinct with A Blend of Real Turkey & Venison

Purina ONE

gold #157 of 1163 $0.20/oz
Purina Beneful Medleys Tuscan Style with Beef in Sauce

Medleys Tuscan Style with Beef in Sauce

Purina Beneful

silver #512 of 861 $0.32/oz
Purina Pro Plan Complete Essentials Chicken & Rice Formula

Complete Essentials Chicken & Rice Formula

Purina Pro Plan

gold #105 of 558 $0.21/oz
Fancy Feast Gravy Lovers Turkey Feast in Roasted Turkey Flavor Gravy

Gravy Lovers Turkey Feast in Roasted Turkey Flavor Gravy

Fancy Feast

bronze #1431 of 1701 $0.32/oz
Cesar Rotisserie Chicken Flavor & Spring Vegetables Garnish Small Breed

Rotisserie Chicken Flavor & Spring Vegetables Garnish Small Breed

Cesar

bronze #1007 of 1163 $0.10/oz
Chewy Made Digestive Health Lamb & Brown Rice Recipe

Digestive Health Lamb & Brown Rice Recipe

Chewy Made

silver #461 of 1163 $0.08/oz
Fancy Feast Petites In Gravy Grilled Chicken with Rice Entree

Petites In Gravy Grilled Chicken with Rice Entree

Fancy Feast

bronze #1330 of 1701 $0.40/oz
Friskies Tasty Treasures Adult Prime Filets in Gravy Variety Pack

Tasty Treasures Adult Prime Filets in Gravy Variety Pack

Friskies

bronze #333 of 354 $0.16/oz
Meow Mix Meow Mix Seafood Medley

Meow Mix Seafood Medley

Meow Mix

bronze #474 of 558 $0.07/oz

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