Will i be able to eat foods with added calcium, iron and magnesium if i'm on synthroid (thyroxine)?

Food and thyroid...: You can eat any kind of food if taking Synthroid (thyroxine) as long as you take this tablet away from all food and all medications. I highly recommend for it to be taken in the middle of the night so you are sure nothing interferes with its absoprtion. Once absobed - typically in one hour - then any food will not affect this medication.