I decided about 3 years ago to go from chemical thyroid to NATURAL ARMOUR THYROID. Great results for me! Big thing about thyroid is this: it is a hormone same as estrogen & testosterone and ALL must be in balance. Best results from Armour because I take it on a symptom-related basis. I take cream estradiol/testosterone from a compounding pharmacist also on a symptom-related basis. My body shape has changed a great deal and have lost about 10 lbs. but not a lot to lose to begin with. I highly recommend "Stop the Thyroid Madness" by Janie A. Bowthorpe, M.Ed. which has been of great help. Until you inform yourself on these matters, you will NOT get what you need...and MOST doctors do NOT want to discuss Armour.