Pro Thyro features targeted nutrients and herbs that support healthy thyroid function and facilitate the expression of thyroid hormone genes.* This formula includes the key ingredient L-Tyrosine, which serves as the foundation to nourish healthy levels of thyroxine.* L-Tyrosine and iodine play a key role in the synthesis of thyroid hormones.* Additionally, riboflavin, flavin adenine dinucleotide (FAD), serves as the currency of energy in the cell and facilitates the metabolic production of energy from food.* Guggul and Ashwagandha may aid in the conversion of thyroxine to the more bioactive triiodothyronine (T4 to T3) and may aid in stimulating the thyroid gland.* These ingredients have also been known to aid in maintaining healthy blood lipid levels.* Rosemary has been added for its antioxidant properties and may aid in preventing free radical damage to thyroid tissue.*