I have been on Xanax since May of 2011. Anywhere from 0.5 mg a day to 3.5 mg a day. It varied the entire time. It averaged like 2.5 mg a day I would say. I am afraid I am going to have seizures. I am taking 0.75 mg twice a day right now for 3 weeks. I feel awful. Im shaky, nervous, eyes are wierd and jumpy, legs feel like they dont exist, very jelly like, anxiety is through the roof, my head is foggy feeling and i have bad derealization. I dont even want to walk around. Anyone have experience with xanax withdrawals, is 3 years straight everyday on them a long time?