Yes, Knorr tomato bouillon does have MSG. Knorr is a Unilever brand that produces dehydrated soup mixes, bouillon cubes, and condiments. The company was established in 1838 by Carl Heinrich Theodor Knorr. Knorr tomato bouillon contains MSG or monosodium glutamate. This ingredient is a common flavor enhancer that is used in many savory foods. It can be found in other Knorr products, such as Knorr chicken flavor bouillon and Knorr beef flavor bouillon. While MSG is safe for most people, some may experience side effects such as headaches, dizziness, or nausea. If you are sensitive to MSG, you should avoid consuming foods that contain it.