Type: Amino acid supplement
Source: Amino acid (supplemental)
L-Lysine Monohydrochloride in Dog and Cat Food
L-lysine monohydrochloride is a supplemental form of the amino acid lysine. The “monohydrochloride” form refers to how the ingredient is manufactured and stabilized.
Why It Appears on Pet Food Labels
It 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
Lysine may be listed as L-lysine or L-lysine monohydrochloride depending on the manufacturer and premix supplier. Both refer to lysine supplementation.
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.