Type: Amino acid
Source: Supplemented amino acid or protein ingredient
Cysteine in Dog and Cat Food
Cysteine is a sulfur-containing amino acid involved in protein synthesis and antioxidant systems.
Why It Appears on Pet Food Labels
Cysteine is added to pet food products to:
-
- Support protein balance
- Assist normal metabolic processes
- Meet amino acid requirements
Where It Is Commonly Found
- Complete diets
- Formulas using plant protein concentrates
Label Context
Often supplemented to balance amino acid profiles.
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.