I also had fatigue and easy weight gain on Levoxyl and finally figured out WHY. It's because it's T4 only. T4 is a storage hormone, and the body is NOT meant to live on a storage hormone alone. No matter how high you dose Levoxyl, you will stay hypo AND get worse as you age. I switched to Armour and it royally changed my life. Armour contains exactly what your own thyroid would be giving you--T4, T3, T2 T1 and calcitonin. And it's natural since it's from pigs. You need to read the stop the thyroid madness website. It explains why you still have fatigue and weight gain. www.stopthethyroidmadness.com I also got the book.
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