Adhd meds causing hypothryroidism | ADHD Information

My daughter is 8 and 1/2 and  has been on Concerta for about almost 2 years and remeron to help her fall asleep at night for about a year. She has a hard time shutting down at night so the doc. has her on the remeron........Now today I find out she has hypothyroidism. I looked up some info and find some correlations with ADHD meds causing hypothyroidism. HAS ANYONE ELSE HAD THIS PROBLEM come up with their child. Now, I don't know if she was misdiagnosed wrong in the first place or if the meds are causing the thyroid problems............This is so heart breaking for me for her to have to be dealing physically with all this..........Any help and or advice is appreciated...............Thanks, Shawna