Monosodium glutamate (MSG) is primarily used as a flavor enhancer to add a savory, meaty "umami" taste to foods, intensifying natural flavors in processed items like soups, sauces, snacks, and meats, and also in cuisines worldwide. It balances flavors, can reduce the need for salt, and is used in various products, including broths, spice blends, and even tobacco, with some historical medical uses for hepatic coma.