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877 products scored223 ingredients explainedNo paid placement
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Ingredient library

Doing real work · Functional nutrient

L-carnitine

A compound that shuttles fatty acids into cells to be burned for energy.

Watched ingredients get highlighted on every product panel you open.

Where it comes from
Synthesis or fermentation.
Why it's in the product
Added to weight-management and cardiac formulas. The evidence for helping preserve lean mass during weight loss in dogs is reasonably good.
Safety and toxicity
Safe, with no established toxicity at dietary 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 65 scored products

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

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 76 out of 100, grade B: Good, check the flags
Hill's Prescription Dietk/d Feline Pâté with Tunaimported, not reviewed
Panel Score 76 out of 100, grade B: Good, check the flags
Hill's Prescription Dietk/d Feline Dry with Chickenimported, not reviewed
Panel Score 76 out of 100, grade B: Good, check the flags
Hill's Prescription DietWeight Loss r/d Chicken Flavorimported, not reviewed
Panel Score 79 out of 100, grade B: Good, check the flags
Purina Pro PlanVeterinary Diets OM Overweight Management Feline Formulaimported, not reviewed
Panel Score 82 out of 100, grade B: Good, check the flags
Royal CaninFeline Health Nutrition Indoor Adult Morsels in Gravy
Panel Score 83 out of 100, grade B: Good, check the flags
Next LevelPerformance Plus Large Breed Adult
Panel Score 83 out of 100, grade B: Good, check the flags
Next LevelHi-Pro Professional
Panel Score 83 out of 100, grade B: Good, check the flags
Next LevelHero’s Saluteimported, not reviewed
Panel Score 84 out of 100, grade B: Good, check the flags
Pure BalanceChicken & Brown Rice Recipe
Panel Score 84 out of 100, grade B: Good, check the flags
Hill's Science DietAdult 7+ Tender Chicken Dinner
Panel Score 84 out of 100, grade B: Good, check the flags
Pure BalanceChicken & Pea Recipe Dog Foodimported, not reviewed
Panel Score 86 out of 100, grade B: Good, check the flags
VictorHi-Pro Plus Formula
Panel Score 86 out of 100, grade B: Good, check the flags
Blue BuffaloTrue Solutions Weight Control Chicken & Oatmeal Recipeimported, not reviewed
Panel Score 86 out of 100, grade B: Good, check the flags
NutriSourceDry Dog Food Chicken & Rice Recipe For Large Breed Dogsimported, not reviewed
Panel Score 87 out of 100, grade B: Good, check the flags
Next LevelNormally Active Healthy Weight Adult
Panel Score 87 out of 100, grade B: Good, check the flags
Heritage Ranch by H-E-BAdult Chicken & Brown Rice Recipeimported, not reviewed
Panel Score 87 out of 100, grade B: Good, check the flags
Evolution DietGourmet Entreeimported, not reviewed
Panel Score 87 out of 100, grade B: Good, check the flags
AnnamaetDry Dog Food Grain Free Aqualuk Cold Water Formulaimported, not reviewed
Panel Score 87 out of 100, grade B: Good, check the flags
Dr. Tim'sDry Dog Food RPM Salmon Meal & Pork Recipe (Grain Free)imported, not reviewed
Panel Score 88 out of 100, grade B: Good, check the flags
IamsProactive Health Adult MiniChunks
Panel Score 88 out of 100, grade B: Good, check the flags
Hill's Science DietAdult Indoor Cat Chicken Recipe
Panel Score 88 out of 100, grade B: Good, check the flags
IamsProActive Health Indoor Weight & Hairball Care
Panel Score 88 out of 100, grade B: Good, check the flags
IamsProActive Health Adult Hairball Care with Chicken and Salmon

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