Definitely overthinking this! But I'm puzzled!
I recently read there's iodine in t4. I take t4 and probably have no functioning thyroid. I took pregnacare through pregnancy which has added iodine in, which is important for baby.
However, is it necessary if on t4? Could it be too much? Or not an issue at those doses?!
An obs I saw at the time said with hypothyroidism and pregnancy the key things are vit d, iodine and getting the tsh well controlled esp in first trimester, so I don't worry too much... Just puzzling!