I have been on Armour for 4 years. I felt great after switching from Synthyroid. I refilled 9/22 and everything fell apart. I felt like I was dying. Exhaustion, losing hair, joint pain, anxiety. My tush was. 927 on 9/1. By 10/14 it was 4.5. I was then admitted to hospital with heart arrhythmia. I reported it to Armour. They took report, were not concerned. I offered to send them prescription, were not interested. Switched to Naturethyroid 23 weeks ago, feel good again.