iron
4 interactions related to iron
levothyroxine + iron
Iron reduces levothyroxine absorption by up to 65%
levothyroxineironabsorptionabsorption interactionsupplement timingmedication timingthyroid medicationhypothyroidismTSHferrous sulfate
vitamin c + iron
Vitamin C significantly enhances non-heme iron absorption (up to 6x)
vitamin cironabsorptionabsorption interactioniron absorptioniron deficiencyiron deficiency anemiaferrous sulfatesupplement timing
calcium + iron
Calcium inhibits iron absorption by up to 60%
calciumironabsorptionabsorption interactioniron absorptionsupplement timingcalcium supplementferrous sulfateprenatal vitamins
iron + zinc
Iron and zinc compete for absorption when taken together in high doses
ironzincabsorptionabsorption interactioniron absorptionzinc absorptionsupplement timingferrous sulfateprenatal vitaminsZMA supplements