You probably won't see this because it's been a long time since your post but I just wanted to tell you that Adrenal Insuffiency is common in people who are hypothyroid and when their hypothyroidism is corrected, their adrenals can go havoc causing racing heart and other symptoms. This isn't a side effect of Armour Thyroid, it means your adrenals are malfunctioning and your doctor should've been monitoring them closely while you were starting your Armour. It could've been corrected with Cortisol.
I am 42 years old..and just started having problems with racing heart..shortness of breath, these symptoms come on fast. I am on 60mg of Armour and my TSH is still 16.5. I was taking Synthryoid but my joints were hurting really bad. Since I have changed to Armour, my joint pain has gone, however, I am now struggling with getting my TSH down and these "weird" heart sensations. Can you help?
racing heart heart malfunction doctor who go to sleep thyroid tests woman doctor nose bleed armour incredibly armour thyroid adrenal insuffiency adrenals hypothyroidism havoc thyroid long time weird heart heart shortness of breath tsh shortness of breath synthryoid joint pain sensations joints