Hope someone has some advice about this...I started taking some supplements about 10 days ago. I started taking Lysine, Magnesium, B-Complex, and St. John's Wort. I have been taking a thyroid med for 16 years. The past three days I have been feeling a little lightheaded, nauseated, and I have been having trouble sleeping (it feels like I am nervous or had too much caffene). Has anyone ever had an adverse reaction to these vitamines and minerals? Could it just be a coincidence and I am just experiencing normal symptoms of Fibro? Any input would be much appreciated. Oh yes....I was taking the standard dosage and since this morning, I have stopped everything except my thyroid stuff. Thanks!