ThyroxineHypothyroidismAbsorptionIntestinal AbsorptionBiopharmaceuticsThyrotropinCalcium CitrateMyxedemaHormone Replacement TherapyTriiodothyronineTherapeutic EquivalencyDrugs, GenericThyroid HormonesThyroid Function TestsThyroid GlandCongenital HypothyroidismThyrotoxicosisBiological AvailabilityHashimoto DiseaseGoiterThyroid DysgenesisMalabsorption SyndromesGoiter, NodularSoy MilkHypothalamic DiseasesFood-Drug InteractionsHyperthyroidismThyroid DiseasesThyroid NeoplasmsCross-Over StudiesThyroidectomyIodide PeroxidasePregnancy ComplicationsCalcium CompoundsCalcium CarbonateThyroiditis, AutoimmuneTabletsArea Under CurveSkin AbsorptionAdministration, OralChemistry, PharmaceuticalDrug InteractionsUnited States Food and Drug AdministrationSpectrophotometry, AtomicDrug StabilityX-Ray Absorption SpectroscopyJejunumPregnancyAutoantibodiesGuidelines as TopicSolubilityDose-Response Relationship, DrugSpectrophotometryIronConfounding Factors (Epidemiology)Spectrum AnalysisIntestine, SmallTime FactorsTreatment OutcomeZinc RadioisotopesRetrospective StudiesZincPhytic AcidDrug Administration ScheduleIron RadioisotopesZinc IsotopesSpectrophotometry, UltravioletIntestinesDuodenumIleumFecesCaco-2 CellsSitosterolsCase-Control StudiesInfant, NewbornWaterIntestinal MucosaLymphBiological TransportKineticsIron, DietaryDietCalcium, DietaryFerrous CompoundsEnterocytesHydrogen-Ion ConcentrationFollow-Up StudiesSodiumCopperPhytosterolsSpectrophotometry, InfraredAzetidinesCholesterolBile Acids and SaltsBicarbonatesLightLymphatic SystemChloridesChromatography, High Pressure LiquidFerritins