I'm new here and hoping asking others with the same illness will give me some insight. I have been hypothyroid for over 30 years. My dose had gone up year after year until I was on 5 grains of Armour thyroid but, doing great on it. Then they reformulated it and the fillers they used I was allergy sensitive to so, changed to just about every thyroid medication out there. Currently on Westhroid Pure. The problem is, I am on 197.5MG and the doctor says I'm in range but, I have gained 65 lbs. even on a vegetarian diet and under 700 cal. a day. just to maintain my current weight. I started at 110 so, I have always been quite thin until they reformulated the Armour thyroid I was on and 65 lb. within 1 year is ridiculous...... anyone else have this happen?