I have been on t4 synthroid for 16 years. my dose is 175 mcg, my doctor just prescribed me 180 mg of Armour thyroid 1 pill a day. I am so sick right now with head aches, brain fog, anxiety, body aches shortness of breath, digestive issues etc. I am worried because of the conversions don't match up. Is this o.k to take. I also am having symptoms of overactive thyroid the headaches and the sweating. I guess i am so sick and perinoid if i take the high dose of armour that i will have sweating headaches and tremors. My blood results all came back in normal range