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, Is Quinoa Good or Bad for Thyroid? The Real Answer Glutathione is the body's primary internal antioxidant, made using the amino acid cysteine, and it helps protect cells from oxidative stress. Beyond detoxification, research shows glutathione is involved in thyroid hormone metabolism, Turmeric and Hashimoto's The Teggatz Clinic Glutathione: A powerful tool in Hashimoto's management ThyroSisters Methimazole induced hypothyroidism causes alteration of the REDOX environment, oxidative stress, and hepatic damage; events not caused by hypothyroidism itself Annals of Hepatology