This table displays some hidden sources of MSG:
These ingredients ALWAYS contain MSG:
Glutamate, Glutamic acid, Monosodium glutamate, Textured protein, Hydrolyzed protein, Monopotassium glutamate, Calcium caseinate, Sodium caseinate, Gelatin, Yeast extract, Yeast food, Autolyzed yeast.
These ingredients OFTEN contain MSG or create MSG during processing:
Flavors & Flavorings, Seasonings, Natural flavors and flavorings, Natural pork flavoring, Natural beef flavoring, Natural chicken flavoring, Soy sauce, Soy protein isolate, Soy protein, Bouillon, Stock, Broth, Malt extract, Malt flavoring, Barley malt, Whey protein, Carrageenan, Maltodextrin, Pectin, Enzymes, Protease, Corn starch, Citric acid, Powdered milk, anything Protein fortified, anything Enzyme modified, anything Ultra-pasteurized.
Some unexpected sources of MSG:
Salad dressings, Frozen meals, Packaged and restaurant soups, Cheese, Reduced fat milk, Chewing gum, Ice cream, Cookies, Vitamin enriched foods, Beverages, Candy, Cigarettes, Medications, I.V. Materials, Supplements, particularly minerals.
This is from Mercola.com