I am very food sensitive. Last week-end when I was entertaining I ate one ‘plain’ rice cracker. It was Fantastic brand and had Flavour Enhancer 627. After realising this I threw them out! But never thought about them again. That night I awoke at 2 am with mild chest pains which I had off and on through until 5 am - the pains were mild but enough to cause me grief and stop me from sleeping - I stayed up most of the night. I have no doubt the Flavour Enhancer in the biscuit caused my problem. - Di, Vic