Thanks for your encouragement. I had RAI one and a half years ago and my synthroid dosage has not stabalized yet. I feel good for two weeks and then I feel lousy for a couple of months till my dosage is lowered. It is now down to 25. I am interested in Lisa’s experience between the first and second RAI. Did she just not stabalize until the proper dosage went to zero and her thyroid was out of control again? Thanks for your help. I’d love to hear from anyone else on this as I am getting very discouraged.