Re: Switching brands
I was on 88 mcg of Synthroid last year when I switched doctors. We both agreed that I was still undermedicated and I was switched to 120 mg (2 grains) of Armour with no gradual change over. I just stopped one and started the other.
If you are switching from one brand to another, be prepared to change your dosage, maybe up, maybe down, because all brands are not metabolized the same way. I've never heard of starting low and working back up again. Just be sure to run new tests 6 weeks after any change.