THE MUST HAVE SUPPLEMENT FOR EVERY PATIENT WITH HASHIMOTO'S: GLUTATHIONE Dr Josh Redd 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 L Glutathione reduced PDF) The effect of hyperthyroidism on glutathione peroxidase activity and selenium level in Iraq patients