I have been on Armour Thyroid for about 5 years now. It took about 1 year to get stable after RAI treatment. About a year ago, I started noticing changes in my health. Severe fatigue, difficulty concentrating, constipation, water retention, depression, weight gain, severly dry eyes, dry skin, etc. I just now found out that Armour has been reformulated. I have been so sick and busy trying to hold down a full-time job and raise 2 children that I haven't even had time to do any research. I actually quit my job and sold my home because I am so tired that I couldn't do my job and take care of my house. I struggle every day. i kept testing my TSH and free t4 through my doc and they are still stable even though I am in declining health. I went to a rhematologist to make sure I didn't have lupus. Nope! Now I can clearly see that my health starting declining with the new Armour!!! I am soooo mad. I have an appointment with my endo this Friday and want to switch to Nature-throid. Anyone out there have trouble convincing your endo to do the switch?