Understanding Hypothyroidism: Diagnosis and Treatment PDF) The Effects of Hyperthyroidism on Lipid Peroxidation, Erythrocyte Glutathione and Glutathione Peroxidase Raised plasma glutathione S transferase values in hyperthyroidism and in hypothyroid patients receiving thyroxine replacement: e Hypothyroidism Los Angeles Thyroid Hormone Therapy Health and Vitality Center 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 Graves Disease & Hyperthyroidism Functional Medicine