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, The LOdown] Glutathione, Your Thyroid & Autoimmunity Deep Dive Functional Fueling Nutrition 9 Health Benefits of Glutathione Taking Glutathione Supplement? Here's What You Should Avoid Glutathione Benefits for Better Thyroid Health Paloma Health Drug delivery systems for thyroid disease treatment: A mini review on current therapies and alternative approaches ScienceDirect