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, Glutathione peroxidase 4 inhibition induces ferroptosis and mTOR pathway suppression in thyroid cancer Scientific Reports Levothyroxine (Synthroid, Tirosint, Levoxyl) is a medication for treating hypothyroidism (underactive thyroid), a condition that is more common in people with Down syndrome. Health care providers usually recommend taking levothyroxine with water Is it safe to take levothyroxine and glutathione together? How to Increase Glutathione to Protect Against Hashimoto's Drug delivery systems for thyroid disease treatment: A mini review on current therapies and alternative approaches ScienceDirect