Over 34 Hidden Names for MSG - Foods That Heal You Once triggered, it lasts anywhere from 1 hr to 3 days. This comes on with no warning & Its completely debilitating. have suffered for 35 years with this & trying to avoid MSG. Don't eat it! Its an ecitotoxin and poison. Same with aspartame. There are other triggers but MSG is at the top if the list for me. It should absolutely be banned by ...