We, typically, have to space things throughout the day… for instance, calcium
supplements shouldn’t be taken within 4 hrs of thyroid med… Take calcium at noon
and at night.
I’m not sure where you saw iron contraindicated. Iron is necessary for proper metabolism of thyroid hormones, but it does need to be separated from them by a few hours. If you’re taking thyroid hormones in the morning, try taking the iron at night.