Hi, I am a woman, age 52 and I am on Armour Thyroid 3 grains now but I feel quite low thyroid now. Every 6 months it seems my Thyroig is worse and when I have it checked, it is lower. My question is if Maxzide ( lowest dose) that I have been taking for some edema and HTN is causing always a downfall of my thyroid? And also, when my throid just finally crashes what happens then, do I just stay on the highest dose or what do the doctors do then?