I had a total thyroidectomy and treatment for thyroid cancer 18 months ago. I have been on synthroid 150 mcg since except for my follow up exam that ended up with me off the medication for 8 wks-horrible experience. I am constantly hungry, even though I am gaining weight. I am tired, and have no sex drive. I have been trying to research options, and found that many people have chosen to switch to armour thyroid for hypothyroidism. Is this a possibility or does anyone know anything about this medication? My doctor will not discuss it with me.