"C0079691"^^ . "FDA"^^ . "Sodium levothyroxineSYDTPNSC0259940" . . . "The sodium salt of levothyroxine, a synthetic levoisomer of thyroxine (T4) that is similar to the endogenous hormone produced by the thyroid gland. In peripheral tissues, levothyroxine is deiodinated by 5'-deiodinase to form triiodothyronine (T3). T3 enters the cell and binds to nuclear thyroid hormone receptors; the activated hormone-receptor complex in turn triggers gene expression and produces proteins required in the regulation of cellular respiration; thermogenesis; cellular growth and differentiation; and the metabolism of proteins, carbohydrates and lipids. T3 also exhibits cardiostimulatory effects.NCI" . "Therapeutic LevothyroxineSYNCI" . . "Levothyroxine Sodium"^^ . "C15H10I4NO4.Na.H2O"^^ . . . "Pharmacologic Substance"^^ . "Levothyroxine Sodium"^^ . "Therapeutic_Levothyroxine"^^ . "Levothyroxine sodiumSYDTPNSC0259940" . "39117"^^ . "Amino Acid, Peptide, or Protein"^^ . "25416-65-3"^^ . "9J765S329G"^^ . "LEVOTHYROXINE SODIUMPTFDA9J765S329G" . "39117"^^ . "Levothyroxine SodiumPTNCI" . . . "36397"^^ . "C888"^^ .