I am a radio sensitive papillary thyroid cancer survivor. My thyroidectomy & first I-131 ablation was in 1999, then another I-131 ablation & a resection at Mayo in 2005. My blood tests say I'm ok but for about the last year I have not felt ok & for the last 6 months I have steadily gone downhill. I don't even know what my question is for this thread :-( I just feel like I'm on a rollercoaster - last week I felt better than I had in months, then today I could hardly pull myself off the couch. I took Levoxyl until it went off-market, then switched to Synthroid. In my head I have associated starting to feel poorly with that switch & hope that I will feel better now that I am back on Levoxyl. How do other people deal with this? I can't be the only one who feels like balancing my thyroid levels is a Herculean task that I am just not up to?