@Ninan It's not just about more energy from thyroid supps. I've been on thyroid replacement since puberty. Having a wrong understanding of such things, I tried twice as a young adult to go off it. I never knew the word Hashimoto's until decades later. All my systems close down without thyroid replacement. And, as recently when I'd thought my healing meant I needed less thyroid, inadequate replacement first seems to fist show up in adrenal stress.
When I first collapsed w/ ME, my husband found some thyroid info, and I asked several MDs, including endocrinologist, to switch me from synthroid to natural thyroid or T3. I stuck w/ the GP who agreed. It still took 5 years working w/ him and compounding chemist to get uncover my reverse T3 (rT3) levels indicated I couldn't convert T4. When I switched to T3 only, life changed. This was the first thing to affect my downward spiral. Only 6 months ago, listening to the speakers at the Thyroid Summit, I found that the commercial T3, cytomel, contains corn flour, which is gluten cross-reactive.
I'm now using compounded T3, 75mcg. I think this is the best replacement I've had in my life.
Datis Kharrazian and Rudy Dragone have been the most helpful to me of the thyroid experts. But I'm not a new thyroid pt., needed fairly particular understandings. I don't think Dragone has a book. I don't know Dr. Ain, author of the book you link. I'd put my money on Kharrazian. See if you can find a vid of him, I think from the site I linked.
I don't know about your levels. One of the things pointed out by several of the speakers I heard is that reference ranges themselves are inaccurate measures. One of those sites should give you more info re tests and levels. For the last 5 years I've only gone by symptoms, though I will request a test now that I've stabilized at my current dose.
