idk but there are some people on youtube claiming it is toxic. like this [ame="http://www.youtube.com/watch?v=ExyNf3u7iQg"]YouTube - Why "" Is A Neuro-Toxic Soup Of Processed Crap! ufc wec mma[/ame]
i think this guy doesn't what he is talking about. i hope someone has more to add on this topic since we consume mass amounts of glatamic acid via protein shakes.