s Thyroiditis. I was taking 112mcg of
Synthroid for about a year, which helped with most of my
symptoms, except the heart palpitations. (Yes, I am hypo and have heart palpitations - sometimes the episodes would last for up to 20 hours at a time.)
About 6 months ago, I convinced my doc to add Cytomel (25mcg) in addition to the Synthroid because I had read that Cytomel can help with palpitations when taken with Synthroid.