Mono Sodium L-glutamate

Monosodium L-glutamate (MSG) is the sodium salt of the amino acid L-glutamic acid. It occurs naturally in many foods, including tomatoes and cheese. It is produced commercially through the fermentation of plant-based materials like sugar beets, sugarcane, or corn.

MSG is used as a flavor enhancer to provide an umami taste, which is a savory, brothy sensation. It is often added to processed foods such as soups, broths, snack foods, and seasoned meats to boost their flavor profile.

In the U.S., MSG is generally recognized as safe (GRAS) by the FDA. Some individuals report sensitivity to MSG, experiencing symptoms like headaches or flushing, though scientific studies have not consistently shown a direct link between MSG consumption and these symptoms at typical dietary levels. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA) have evaluated MSG, with no numeric acceptable daily intake (ADI) specified by JECFA. Research continues to explore potential effects, but current evidence does not support widespread adverse reactions in the general population.