doi: 10.1007/s00424-006-0114-1
There are liquid supplements just for people with kidney disease, but you must check with your healthcare provider before taking them, especially if you are on a fluid restriction
Statements Author contributions FW: Writing original draft

Sources Antioxidant Deficiencies in Hospitalized Dogs and Cats [State of the Art Lecture] - WSAVA2008 - VIN Effect of glutamine on glutathione kinetics in vivo in dogs - ScienceDirect Selected biomarkers of oxidative stress in healthy Beagle dogs: A preliminary study Reactive oxygen species, glutathione, and vitamin E concentrations in dogs with hemolytic or nonhemolytic anemia - Woolcock - 2020 - Journal of Veterinary Internal Medicine - Wiley Online Library Effect of glutamine on glutathione kinetics in vivo in dogs - ScienceDirect Reduced glutathione accelerates the oxidative damage produced by sodium n-propylthiosulfate, one of the causative agents of onion-induced hemolytic anemia in dogs - ScienceDirect Chronic exposure to xenobiotic pollution leads to significantly higher total glutathione and lower reduced to oxidized glutathione ratio in red blood cells of children with autism - ScienceDirect Toxicity of Glutathione-Binding Metals: A Review of Targets and Mechanisms - PMC Clinical Implications of Persistent Organic Pollutants Epigenetic Mechanisms Antioxidant Effect of a Dietary Supplement Containing Fermentative S-Acetyl-Glutathione and Silybin in Dogs with Liver Disease Relationship between Glutathione and the Immune System Glutathione: A key player in autoimmunity - ScienceDirect Glutathione for Food and Health Applications with Emphasis on Extraction, Identification, and Quantification Methods: A Review Can Dogs Eat Tomatoes

doi:10.1155/2016/3286365 Cai J, Changgao W (2012) Preparation method of glutathione-enriched yeast
[DOI] [PubMed] [Google Scholar] 109.Liphaus BL, Kiss MH, Carrasco S, Goldenstein-Schainberg C