There's no indication that consuming even large amounts of MSG would cause one to feel sick. Secondly, using too much MSG in a food actually can make the food taste worse—not better. Therefore, it's unlikely you'd ever want to eat food that contains excess MSG.
Because it is a self-limiting substance, food processors use the least amount of MSG necessary for maximum flavor impact. In most cases, this means that processed foods contain only 0.1 to 0.8 percent of the food's weight as served. In the kitchen, this translates to one-half teaspoon of MSG per pound of meat or 4-6 servings of vegetables, casserole or soup.
How about you guys what your thoughts about having too much MSG to foods you're eating?