underactive thyroid
"After burn-out tech job my thyroid became underactive.  Began on Armour thyroid 1 grain with positive effects for about 15 years. During that time one Doctor insisted I try the synthetic, levothyroxine, (because she believed the 'spin' from big-pharma about dessicated thyroid). I reacted to levothyroxine with dark void spot in the center of my vision. So, I went back to Armour for years until they changed formula when I began to get hypo symptoms again. So I tried Naturethroid, ugh, I got a severe case of hives. So had to go back to Armour even though it was now suboptimal. Discovered they added titanium dioxide in new formula which I am allergic to and is what Naturethroid has. Trying NP Thyroid now, no titanium, will report results later."