Thyroid medication hi res stock photography and images Alamy Carnitine in Mitochondrial Fatty Acid Transport and Oxidation Encyclopedia MDPI The supplement secret for hyperthyroidism? When dealing with hyperthyroidism or Graves' disease, L carnitine can be a total game changer. It helps block the entry of thyroid hormone into the cell nuclei, potentially There are 3 main types of thyroid medications available T4 T3 (usually combined with T4) NDT desiccated thyroid (a combination of T4 + T3) Most are widely available