Glutathione: The Master Antioxidant & Its Benefits Modern Endocrine This one antioxidant is ULTRA important for your thyroid function Glutathione is our body's master antioxidant meaning it's the most important and abundant one. As it relates to the thyroid, think How to Increase Glutathione to Protect Against Hashimoto's This one antioxidant is ULTRA important for your thyroid function , Glutathione is our bodys master antioxidant meaning its the most important and abundant one. As it relates to the thyroid, Effect of Melatoninergic Drugs on the Specific Activity of Glutathione Redox Cycle Enzymes in Experimental Hyperthyroidism Pharmaceutical Chemistry Journal Springer Nature Link