Ingredient file // Ingredient
Vitamin D3
Printed as “Vitamin D3 Supplement” on some labels. Same ingredient.
The animal-derived form of vitamin D, the form dogs use most efficiently.
Our read // In our catalog
In 1 of every 3 foods we track
Share of foods that list it
34%
774 of the 2,250 foods we track, from 41 brands. 592 dry dog food, 153 wet dog food, 16 frozen dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 40. 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 98% of foods.
Price per lb
Median of the cheapest bag price across 517 priced foods, 10% below the catalog. The price is the food's, not the ingredient's.
Who leans on it
16%
of the foods that list it are from Blue. 41 brands use it in total.
What it is
Why it turns up in dog food
- Drives calcium and phosphorus absorption and bone mineralisation. Added in tightly controlled amounts.
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Plus 31 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
- #35 Iams Adult Large Breed Dry Dog Food
- #39 Blue Life Protection Formula Small Breed Senior Chicken and Brown Rice Recipe 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
- Chicken Fat 44%
- Flaxseed 40%
- Chicken 40%
- Chicken Meal 38%
- Peas 36%
- Natural Flavor 32%
- Oatmeal 22%
- Brown Rice 21%
- Barley 19%
- Dried Plain Beet Pulp 18%
- Turkey Meal 16%
- Lentils 16%
On labels as
Other names for this
Manufacturers do not all use the same wording. These all mean the same thing.