Cysteine for Dogs: Glutathione Support, Liver Health & Antioxidant Defence
L-cysteine is the rate-limiting amino acid in your dog's production of glutathione — the most abundant and arguably most important antioxidant in every cell of the body. Without adequate cysteine, glutathione synthesis stalls, leaving the liver, gut lining and immune system vulnerable to oxidative damage. This evidence-based guide explores how L-cysteine at 30 mg per chewy in Bonza Boost Bioactive Bites supports your dog's internal antioxidant defences, hepatic detoxification pathways and intestinal barrier integrity through the gut–liver and gut–immune axes.