The following substances contain the highest percentage of factory created free glutamate, with MSG containing 78%:
| MSG | Gelatin | Calcium Caseinate |
| Monosodium glutamate | Hydrolyzed Vegetable Protein (HVP) | Textured Protein |
| Monopotassium glutamate | Hydrolyzed Plant Protein (HPP) | Yeast Extract |
| Glutamate | Autolyzed Plant Protein | Yeast food or nutrient |
| Glutamic Acid | Sodium Caseinate | Autolyzed Yeast |
| Vegetable Protein Extract | Senomyx (wheat extract labeled as artificial flavor) |
The following substances contain some factory created free glutamate in varying amounts. Please note that some food labels list several of these items, which can add up to a considerable and dangerous amount in one product:
| Malted Barley (flavor) | Natural Flavors, Flavors, Flavoring | Modified food starch |
| Barley malt | Reaction Flavors | Rice syrup or brown rice syrup |
| Malt Extract or Flavoring | Natural Chicken, Beef, or Pork, Flavoring "Seasonings" (Most assume this means salt, pepper, or spices and herbs, which sometimes it is.) | Lipolyzed butter fat |
| Maltodextrin, dextrose, dextrates | Soy Sauce or Extract | "Low" or "No Fat" items |
| Caramel Flavoring (coloring) | Soy Protein | Corn syrup and corn syrup solids, high fructose corn syrup |
| Stock | Soy Protein Isolate or Concentrate | Citric Acid (when processed from corn) |
| Broth | Cornstarch fructose (made from corn) | Milk Powder |
| Bouillon | Flowing Agents | Dry Milk Solids |
| Carrageenan | Wheat, rice, corn, or oat protein | Protein Fortified Milk |
| Whey Protein or Whey | Anything enriched or vitamin enriched | Annatto |
| Whey Protein Isolate or Concentrate | Protein fortified "anything" | Spice |
| Pectin | Enzyme modified proteins | Gums (guar and vegetable) |
| Protease | Ultra-pasteurized dairy products | Dough Conditioners |
| Protease enzymes | Fermented proteins | Yeast Nutrients |
| Lecithin | Gluten and gluten flour | Protein powders: whey, soy, oat, rice (as in protein bars shakes and body building drinks) |
| Amino acids (as in Bragg's liquid amino acids and chelated to vitamins) | Algae, phytoplankton, sea vegetable, wheat/ barley grass powders |
European numbers for glutamate containing additives:
| 620 | 625 |
| 621 | 627 |
| 622 | 631 |
| 623 | 635 |
| 624 | |
The book, Battling the MSG Myth, will simplify your life by giving in depth facts about these hidden substances and the common foods in which they are found. Find tips on label reading, shopping, and cooking. Enjoy good eating by learning how to avoid all the common foods and supplements that contain MSG, aspartame, L-cysteine, and sulfites. Learn how to substitute healthy alternative products that can be found in most supermarkets.