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Our Most Comprehensive Thyroid Formula. Included in this formula are thyroid-supportive nutrients such as iodine, selenium, and the amino acid tyrosine. Selenium is a cofactor for 5'-deiodinase, the enzyme required to convert T4 to T3. Iodine and L-tyrosine are required in the production of thyroid hormones.
Ingredients: Iodine, Zinc, Selenium, Copper, L-Tyrosine