Ingredient file // Ingredient
Zinc Sulfate
An inorganic zinc salt used as a trace mineral supplement.
Our read // In our catalog
In 1 of every 5 foods we track
Share of foods that list it
21%
469 of the 2,250 foods we track, from 31 brands. 407 dry dog food, 53 wet dog food, 6 dog food topper.
Each square is 1% of the catalog
Where it sits on the label
Median position 28. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 99% of foods.
Price per lb
Median of the cheapest bag price across 331 priced foods, 12% below the catalog. The price is the food's, not the ingredient's.
Who leans on it
22%
of the foods that list it are from Blue. 31 brands use it in total.
What it is
Why it turns up in dog food
- Supplies zinc for skin, coat, wound healing and immune function. Better absorbed than zinc oxide.
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Plus 21 more brands.
Amazon best sellers that list it
- #1 Blue Life Protection Formula Adult Chicken and Brown Rice Recipe Dry Dog Food
- #7 Blue Life Protection Formula Adult Small Breed Chicken and Brown Rice Recipe Dry Dog Food
- #10 Diamond Naturals Skin & Coat Formula All Life Stages Salmon & Potato Formula Dry Dog Food
- #17 Taste of the Wild High Prairie Canine Recipe with Roasted Bison & Roasted Venison Dry Dog Food
- #21 Cesar Filet Mignon Flavor & Spring Vegetables Garnish Dry Dog Food
- #27 Blue Life Protection Formula Senior Chicken and Brown Rice Recipe Dry Dog Food
- #30 Blue Life Protection Formula Puppy Chicken and Brown Rice Recipe Dry Dog Food
- #34 Purina One SmartBlend Healthy Weight High Protein Formula Adult Premium Dry Dog Food
Rank on Amazon's dog food best seller list, checked October 2026.
Usually listed with, share of the foods that list it
- Flaxseed 47%
- Peas 46%
- Chicken Fat 45%
- Chicken Meal 42%
- Natural Flavor 39%
- Chicken 35%
- Oatmeal 25%
- Barley 24%
- Brown Rice 23%
- Dried Plain Beet Pulp 22%
- Turkey Meal 21%
- Pea Starch 18%
On labels as
Other names for this
Manufacturers do not all use the same wording. These all mean the same thing.