underactive thyroid
"Great news!  I just talked with Forest Labs (manufacturer of Armour Thyroid). They updated their manufacturing equipment and changed formulation by increasing dextrose and decreasing cellulose.  The dessicated thyroid stayed the same, even though they have trouble getting it.  However, the pills now are very difficult to cut in half (they crumble).  I do great on Armour and had a severe allergic reaction to synthetic hormones.  I don't like the new formulation as much because I cut my pills in half, but it's better than synthetic.  Hope this information helps."