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

Ingredient library

Doing real work · Essential amino acid

Taurine

A sulfur-containing amino acid concentrated in heart, eye, and muscle tissue.

Watched ingredients get highlighted on every product panel you open.

Where it comes from
Synthesized commercially, and naturally present in animal tissue.
Why it's in the product
Required in the diet for cats, who cannot make enough themselves. Deficiency causes blindness and dilated cardiomyopathy, and its discovery in the 1980s is one of the genuine success stories of pet nutrition.
Safety and toxicity
Safe. No meaningful toxicity at supplemental levels.
Interactions and who should be careful
Taurine has been added to many grain-free dog foods in response to the ongoing FDA DCM investigation. That is a reasonable precaution, not a proven fix.

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 311 scored products

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

Panel Score 44 out of 100, grade F: We'd skip it
9LivesPlus Careimported, not reviewed
Panel Score 47 out of 100, grade F: We'd skip it
Meow MixTender Centers Salmon & Chicken
Panel Score 52 out of 100, grade D: Better options exist
9LivesDaily Essentials Dry Cat Food
Panel Score 55 out of 100, grade D: Better options exist
TemptationsBlock Party BBQ Flavor Dry Cat Foodimported, not reviewed
Panel Score 63 out of 100, grade C: Proceed with caution
Meow MixOriginal Choice Dry Cat Food
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
Fancy FeastClassic Paté Chicken Feast
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
PurinaFriskies Seafood Sensations Dry Cat Food
Panel Score 71 out of 100, grade C: Proceed with caution
Fancy FeastKitten Tender Chicken Feastimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
Fancy FeastKitten Tender Salmon Feastimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
Fancy FeastSeafood Classic Paté Collectionimported, not reviewed
Panel Score 71 out of 100, grade C: Proceed with caution
Fancy FeastKitten Tender Ocean Whitefish Feastimported, 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
Hill's Prescription DietKidney Care k/d Chicken & Vegetable Stewimported, not reviewed
Panel Score 75 out of 100, grade B: Good, check the flags
Purina Cat ChowComplete Chicken Dry Cat Food
Panel Score 75 out of 100, grade B: Good, check the flags
TemptationsSeafood Medley Cat Treats
Panel Score 75 out of 100, grade B: Good, check the flags
Fancy FeastFlaked Chicken & Tuna Feastimported, not reviewed
Panel Score 75 out of 100, grade B: Good, check the flags
FriskiesExtra Gravy Chunky With Beef In Savory Gravyimported, not reviewed
Panel Score 75 out of 100, grade B: Good, check the flags
FriskiesLil' Grillers Seared Cuts With Tuna In Gravyimported, not reviewed
Panel Score 76 out of 100, grade B: Good, check the flags
Hill's Prescription Dietk/d Feline Pâté with Tunaimported, not reviewed

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