Because glutathione levels decline as you age, and glycine can help slow the glutathione slide, it's a good idea to keep your levels high by eating protein rich foods, like organic poultry, grass fed Glutathione: the master antioxidant Liposomal glutathione outperforms plain glutathione in uptake, cell regeneration and systemic availability: evidence from cellular and human models British Journal of Nutrition Cambridge Core Frontiers Improving Antioxidant Capacity in Children With Autism: A Randomized, Double Blind Controlled Study With Cysteine Rich Whey Protein Glutathione Benefits: Why Liposomal Delivery Works 10x Better