Im confused. Most people will tell you 400mcg is quite a bit for long term use but if thats what your taking and your levels are high, why would you stop selenium all together??? It makes no sense at all. Its like saying you are overweight stop eating.
Your what, 30 pts high? why not cut back to a more acceptable dose of say 100-200mcg?
Selenium is essential for the enzymatic process of converting thyroid enzymes AND for the breakdown of the toxic by products.