levothyroxine
3 interactions related to levothyroxine
levothyroxine + calcium
Calcium significantly reduces levothyroxine absorption
levothyroxinecalciumabsorptionabsorption interactionsupplement timingthyroid medicationhypothyroidismTSHantacidscalcium supplements
levothyroxine + iron
Iron reduces levothyroxine absorption by up to 65%
levothyroxineironabsorptionabsorption interactionsupplement timingmedication timingthyroid medicationhypothyroidismTSHferrous sulfate
levothyroxine + magnesium
Magnesium can reduce levothyroxine absorption
levothyroxinemagnesiumabsorptionabsorption interactiondrug supplement interactionsupplement timingmedication timingTSHthyroid medicationantacids