I think I have been having a bad reaction to Cytomel as well.
I was taking 25 mcg twice a day and that made me feel like my heart was going to come out of my chest.
They dropped me down to 1/2 a 25 mcg in the morning and 1/2 at night. I feel a little better but with any activity--watch out! Plus I have lots of other sensations going on so it's just a anxiety attack waiting to happen!
I understand why I/we have to take this medicine, but it doesn't make the side effects any easier to deal with.
Just do what I have been trying so hard to do. Just believe in the fact that you are going to be okay. That's all we can do. Just belive and hope.
Take care of yourself.