RecallSep 8, 2026FI Supplements: Potential to be contaminated with Salmonella
877 products scored223 ingredients explainedNo paid placement

Ingredient library

Doing real work · Natural preservative

Mixed tocopherols

Also appears on labels as: mixed tocopherols (preservative), mixed tocopherols (a preservative), mixed tocopherols (natural preservative), tocopherols, tocopherols (preservative), vitamin e

The family of compounds that make up vitamin E. As a preservative they sacrifice themselves to oxidation so the fat in the food does not.

Watched ingredients get highlighted on every product panel you open.

Where it comes from
Extracted from vegetable oils, most often soybean or sunflower.
Why it's in the product
Keeps fats from going rancid, and doubles as the food's vitamin E source. This is the ingredient brands switched to when they dropped BHA and ethoxyquin.
Safety and toxicity
No safety concern. Vitamin E is a required nutrient. Its one practical downside is that it protects fat less durably than synthetic antioxidants, which is why naturally preserved foods have shorter shelf lives. Buy smaller bags and check the date.
Interactions and who should be careful
Very high supplemental vitamin E can affect blood clotting, but not at food levels.

General reference, not veterinary advice. Dose, breed, and existing conditions change the answer, so talk to your vet before changing what your pet eats. Think we got this wrong? Tell us and we log it publicly.

Found in 464 scored products

Lowest scores first. Its presence here is not what drove those scores.

Panel Score 47 out of 100, grade F: We'd skip it
Meow MixTender Centers Salmon & Chicken
Panel Score 48 out of 100, grade F: We'd skip it
Kibbles 'n BitsOriginal Savory Beef & Chicken
Panel Score 51 out of 100, grade D: Better options exist
CesarFilet Mignon Flavor & Spring Vegetables Garnish Small Breed Dry
Panel Score 55 out of 100, grade D: Better options exist
TemptationsBlock Party BBQ Flavor Dry Cat Foodimported, not reviewed
Panel Score 56 out of 100, grade D: Better options exist
Gravy TrainChunks In Gravy With Chicken Chunks
Panel Score 59 out of 100, grade D: Better options exist
PedigreeComplete Nutrition Adult Roasted Chicken, Rice & Vegetable
Panel Score 59 out of 100, grade D: Better options exist
Milk-BoneBrushing Chews Daily Dental Treats, Small/Medium
Panel Score 59 out of 100, grade D: Better options exist
PedigreeTasty Biscuits Peanut Butter Bacon Flavorimported, not reviewed
Panel Score 59 out of 100, grade D: Better options exist
PedigreeAdult Complete Nutrition Grilled Steak & Vegetable Flavorimported, not reviewed
Panel Score 60 out of 100, grade C: Proceed with caution
Purina Puppy ChowTender & Crunchy With Real Beef & Riceimported, not reviewed
Panel Score 63 out of 100, grade C: Proceed with caution
Milk-BoneOriginal Medium Biscuits
Panel Score 64 out of 100, grade C: Proceed with caution
WhiskasIndoor Cat Chicken Flavorimported, not reviewed
Panel Score 67 out of 100, grade C: Proceed with caution
Purina Dog ChowTender & Crunchy With Real Lamb & Turkey Flavorimported, not reviewed
Panel Score 68 out of 100, grade C: Proceed with caution
9LivesHearty Cuts With Real Turkey, Chicken & Cheese In Gravyimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
CesarFilet Mignon Flavor Wet Dog Food
Panel Score 71 out of 100, grade C: Proceed with caution
CesarClassic Loaf in Sauce Grilled Steak & Eggs Flavorimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
Fancy FeastCreamy Delights Chicken Feast with a Touch of Real Milkimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
Meow MixTenders In Sauce With Real Chicken & Beefimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
FriskiesTasty Treasures Accented With Bacon Turkey Dinner In Gravyimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
FriskiesWarm'd & Serv'd Grill'd Bites With Chicken In Gravyimported, not reviewed
Panel Score 72 out of 100, grade C: Proceed with caution
Special KittyGourmet Formula Seafood Blend
Panel Score 72 out of 100, grade C: Proceed with caution
Bil JacDessert Jacs Pumpkin Flavored Treatsimported, not reviewed
Panel Score 72 out of 100, grade C: Proceed with caution
Bil JacDry Food Senior Select Formula With Chicken & Oatmealimported, not reviewed
Panel Score 72 out of 100, grade C: Proceed with caution
Hill's Prescription DietKidney Care k/d Chicken & Vegetable Stewimported, not reviewed

440 more scored products list this ingredient. Showing the 24 lowest-scoring.