Can L Carnitine Fumarate Support Energy Levels for Long COVID and ME CFS Patients? RTHM 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 The Complex Web of Interferences With Thyroid Function Tests Endocrine Practice Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link