Hello all! I have recently been given Armour Thyroid as I don't seem to be feeling any better on Thyroxin. I was taking 75mg one day then 100mg the next. My GP had said that I should try 100mg every day but I was a bit reluctant as I had tried this before and had headaches. I began to think it was just that they Thyroxin wasn't working for me so I saw an Endocrinologist who offered me Armour. Over the past few weeks I have worked my way up from 60mg to 105mg (1 3/4 grains). I still feel very sluggish, get puffy eyes occasionally, experience tiredness and lack motivation and get brain fog. I just feel totally underpowered. In fact, I certainly don't feel any better on Armour than I did Thyroxin. I have been on Armour for approximately 2 months now. Any comments would be very gratefully read. Thankyou all.