This is a major crisis for a LOT of people.
I've taken Armour Thyroid since I was eleven years old. I have Hashimoto's disease, the most common cause of low thyroid. I have argued with lots of doctors who want to put me on synthroid.
My mother was diagnosed with the same disease, at the same age, and she was put on Armour thyroid in about 1933 back in the Dark Ages.
The folks at
Stop the Thyroid Madness - Thyroid info and life-changing truth about thyroid treatment are freaked out, and understandably so.
I had a stupid doctor take me OFF this stuff years ago -- I was off of it for nearly five years. I got to where I could only get out of bed on sheer willpower. My face was real puffy from the severe form of thyroid deficiency which is called myxedema. The doc who finally figured it out said I would have gone into a coma and DIED in a few weeks.