Type: Essential amino acid
Source: Supplemented amino acid or protein ingredient
L-Leucine in Dog and Cat Food
L-leucine is an essential amino acid involved in muscle protein synthesis.
Why It Appears on Pet Food Labels
L-leucine is added to pet food products to:
-
- Support muscle maintenance
- Balance amino acid profiles
- Meet essential nutrient requirements
Where It Is Commonly Found
- High-protein formulas
- Complete diets
Label Context
Often supplemented when plant protein concentrates are used.
For pet-specific considerations, use the ingredient scan tool.
Educational Note
This page is part of the PetFoodDecoded Label Ingredient Library and is provided for educational reference only.