Dunno.......but I can confidently say that its got not much bad stuff other than severely lacking nutrients. Its been part of my diet since i was a kid. I used to take 2 packets as a kid EVERY night. but of course sometimes buang in sayur or egg. Now in my final year in uni and still ok. Hehehe (touchwood)

darklight is right. Chinese cooking uses a lot of MSG since ages ago. Its a tapioca extract or something like that.