Type: Amino acid supplement
Source: Amino acid (supplemental)
L-Lysine in Dog and Cat Food
L-lysine is a supplemental form of the amino acid lysine. It may be added to help balance amino acid levels in the overall formula.
Why It Appears on Pet Food Labels
L-lysine may be included to:
- Support amino acid balance in the recipe
- Complement protein sources in the formula
- Help meet formulated nutrient targets
Where It Is Commonly Found
- Dry kibble
- Cat food formulas (often listed among supplements)
- Foods listing added amino acids
Label Context
Amino acids may appear as supplemental ingredients (L-lysine, L-tryptophan, DL-methionine, taurine). The specific additions depend on formula goals.
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.