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, Arsenic Trioxide and Reduced Glutathione Act Synergistically to Augment Inhibition of Thyroid Peroxidase Activity In Vitro Biological Trace Element Research Springer Nature Link Glutathione Treatment in IVF Applications Anadolu Salk Merkezi Glutathione peroxidase 4 inhibition induces ferroptosis and mTOR pathway suppression in thyroid cancer Scientific Reports How to Increase Glutathione to Protect Against Hashimoto's Role of oxidative stress and intracellular glutathione in the sensitivity to apoptosis induced by proteasome inhibitor in thyroid cancer cells BMC Cancer Springer Nature Link