I had been taking L-Arginine (500 mgs twice a day) for a year and a half (that dose is less than what's in a 7oz steak). About a month ago, I had an episode with my neck where I apparently got a pinched nerve or something. (this is still ongoing with the next step of getting an MRI) I thought maybe the L-Arginine might have been causing the problem so I stopped taking it. Several days later I experienced an anxiety attack. I'm a laid back guy that has never experienced something like that. I was wondering if maybe it was because i stopped taking the supplement or if the pinched nerve can cause anxiety. Has anyone experienced anything like this?