My doctor only tests TSH and I haven't gone out and gotten my own tests yet. But my TSH was creeping up and I was always cold (which was new for me), so I have been looking for ways to boost my sluggish thyroid. My approach is:
1. use natural sea salt (must have colors in it, not white) and get more sleep to help adrenals
2. take milk thistle to support the liver, which converts T4 to T3
3. take iodine and related supplements--it made sense to me that I was iodine deficient because I hadn't used iodized salt in a long time. It is particularly important to take selenium with the iodine if there is any question of antibodies.
Thyroid Mistreatment, Hypothyroidism Scandals, and Thyroid Treatment Problems | Stop The Thyroid Madness
I don't see a dramatic difference, but I do have more energy and I am definitely less cold.