I have been taking Cytomel 5mcg for over 20 years. I have tried to switch over to a generic 3 times. Each time I ended up sick with an elevated blood pressure and a pulse below 55. My insurance will not allow a tier reduction to help with the cost of this medication, which is 4 times the cost of the generic. My question is... which generic is the closest in formulation to Cytomel? I'm willing to try the switch one more time but don't know which med to ask for. Thank you.