Orange Naturals Thyroid Spark formula is a synergistic blend of nutrients and herbs that are designed to support the healthy functioning of the thyroid gland. Thyroid Health contains iodine naturally sourced from bladdderwrack to help in the day-to-day functioning of the thyroid gland along with other important thyroid minerals such as selenium, zinc and copper. These all act as powerful antioxidants helping to combat oxidative stress and metabolize fats, proteins and carbohydrates.