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Hydrogen peroxide-induced production of a 40 kDa immunoreactive thyroglobulin fragment in human thyroid cells: the onset of thyroid autoimmunity

Some are: Mechanistic - based on how drugs and supplements act at receptors or metabolism pathways Case reports - single or small numbers of people show a signal worth noting Clinical trials - larger human studies that may demonstrate an effect For L-carnitine, the best evidence links to thyroid hormone action in humans

For topical formulation or long protocols, 100mg vials are the best value

perform a sensitivity test before first use, discontinue use if irritation occurs