Half my thyroid was removed when I was a teenager (1970's) for benign nodules. No Synthroid then. Since that time, my thyroid has been functioning just OK--thyroid hormone levels have always been just a little low. Now I have two more fairly large nodules on the remaining lobe. They were only found because my resting HR has been wacked out lately and made a visit to the cardiologist (I have some other arrythmia type issues). Biopsy was inconclusive and my internist, general surgeon, and physician husband are recommending surgery to remove the remaining lobe. I'm pretty much resigned to the fact that it'll have to come out--it's just not a good time (is it ever for surgery?)

What has been your experience on Synthroid? I've lost a lot of weight (intentionally) in the past year and I am so terrified of messing up my metabolism. Has it been difficult to regulate? Any side effects? I've read horror stories elsewhere on the internet. Internist and surgeon downplay the regulation issues, husband (gynecologist) says it can be difficult. I guess I'm just asking for your personal experience. Thanks for sharing.