About a month and a half ago I began having anxiety attacks--not even so much an attack as a feeling of anxiousness all day. Insomnia, shallow breathing, agigtated, etc. I've been to the dr. and had EKG, echocardiogram, lung x-rays, thyroid ultrasound and bloodwork done. Everything is normal with the exception of being diagnosed with Hashimotos Thyroiditis. I've been put on synthroid, which I take daily. My doc. also prescribed me xanax 0.25mg to help me sleep. I've been told and have read that I could be experiencing anxiety due to the thyroid problem, but since it takes a month for the synthroid to take effect, I won't know if that will help for another 2 weeks or so. Since then, my anxiety is getting worse. I saw an assoiciate of my doctors' on Friday and she prescribed BuSpar, which I had filled, but have yet to take. I've heard so many negative things about BuSpar that I'm afraid to take it. I'm out of the xanax and want to know that if I get another prescription for that, would it be a problem to take it with the BuSpar--assuming I decided to take that. Also, do you know of any studies that show the effectiveness of BuSpar. And finally is it possible for Hashimotos Thyroiditis to cause anxiety/anticipatory anxiety. Sorry so longwinded. Thanks for your help.