After my thyroidectomy, I tried the standard medication, Synthroid (Synthetic T4). The thyroid regulates everything in your body, so without it, you're a huge swollen corpse. At first synthetic T4 was OK then I became very sick and when I tried Armour (the original formula-this was 20 years ago), my life was back to normal. Natural Desiccated thyroid (NDT has all the T's in it which a thyroid has T2 T3 T4 and calcitonin) Armour changed everything until they changed formulation in 2009 (and later changed hands again) and I had to go through all sorts of ill health to find a replacement. I tried NP thyroid (NDT) and my face was constantly covered in rashes and I felt worse and worse. The Armour thyroid of today has even more fillers. I can only tolerate compounded thyroid replacement with one natural filler. It has given me my life back and I am now healthier than ever. I almost forget that I could die a horrible death if I don't get the right replacement. Please don't let them take away the only solution that has saved my life. This is no joke. Life and death