In 2011, for example, researchers who administered 1,000mg per day of non-liposomal glutathione found "no significant changes were observed in biomarkers of oxidative stress" in participants after four weeks.2 In contrast, a 2019 study of identical length administered liposomal glutathione at 500-1,000mg doses and saw significant decreases in oxidative stress biomarkers plus improvements in immune system markers.3 Two of our top recommended glutathione supplements are liposomal, by the way: Codeage Liposomal Glutathione, our recommendation for most people Quicksilver Scientific Glutathione, our top liquid glutathione supplement Branded glutathione Glutathione supplements often use one of two branded versions of glutathione that are formulated to improve absorption: Setria or Opitac
If the stack is being researched for a tendon, ligament, muscle, or joint issue, this is when early improvements may become more noticeable
PMC 2739594
Sources of depletion can include: Mitochondrial energy production (a normal and essential process, but creates harmful byproducts like ROS) Chronic infections, gut dysbiosis (including SIBO and Candida ), and ongoing inflammation Air pollution, heavy metals, and environmental toxins 17 Ultra-processed foods, sugar-sweetened beverages, and foods high in advanced glycation end products (heavily browned foods) 18 Pesticides and herbicides 19 Alcohol and smoking Psychological stress Even vigorous exercise (a healthy stressor that still creates oxidative byproducts) 20 Understanding this helps explain why simply eating well sometimes isnt enough, and why targeted nutritional strategies make a meaningful difference
