I have
Graves disease dxd Dec 2007,
and have been on PTU since then
and until about 2 weeks ago was feeling great. My last blood test was in Feb & all levels were normal. Then, about 2 weeks ago, I got the flu & took some over the counter cold & flu medicine. After taking it, I actually read the box & it said not to take if you have thyroid disease. Ever since then, I feel as if some of my symptoms are coming back (rapid heartbeat, anxiety, insomnia).