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 Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health Can Carnitine Synergy Support Energy and Brain Fog in Long COVID and ME CFS? RTHM Acetyl L Carnitine 500 mg Nature's Trove Graves' Disease and the Manifestations of Thyrotoxicosis Endotext NCBI Bookshelf