Some time ago I found some corn chips (Viva brand) that advertised having no MSG.  I bought them a few times before connecting with them a very uncomfortable feeling of restlessness, agitation and panic, heart palpitations, hot flushes and a "buzzing" sensation; I thought I was having a panic attack.  Since recognising the link I bought the chips once more to test the idea that this was the cause; after about 5 chips I started to feel the ‘buzzing’ and threw the rest of the packet away. - Kathy from Adelaide.