9 Health Benefits of Glutathione Measurement of oxidative stress and total antioxidant capacity in hyperthyroid patients following treatment with carbimazole and antioxidant ScienceDirect What Is Glutathione? Purifi IV Raised plasma glutathione S transferase values in hyperthyroidism and in hypothyroid patients receiving thyroxine replacement The BMJ 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 Glutathione 500 mg Plus 21st Century Vitamins 21st Century Vitamins