Monosodium glutamate (MSG) is a flavor enhancer that is commonly used in processed foods and is also added to some Asian dishes. Some people may experience adverse reactions to MSG, which are often referred to as "MSG symptom complex." These symptoms can include:
Headache: Some people report headaches as a side effect of consuming MSG.
Flushing: A warm, tingling sensation on the skin, especially on the face, neck, and upper chest, is a common side effect of consuming MSG.
Numbness or tingling: Some people may experience a sensation of numbness or tingling in the face, neck, and arms after consuming MSG.
Chest pain or tightness: Chest pain or tightness is a rare but serious side effect that has been reported after consuming MSG.
Nausea and vomiting: Some people may experience nausea and vomiting after consuming large amounts of MSG.
Allergic reactions: Some people may have an allergic reaction to MSG, which can cause symptoms such as itching, hives, and difficulty breathing.
Asthma symptoms: People with asthma may experience worsening of asthma symptoms, such as wheezing and shortness of breath, after consuming MSG.
Migraines: Some people who are sensitive to MSG may experience migraines after consuming it.
Muscle tightness or weakness: Some people may experience muscle tightness or weakness as a side effect of consuming MSG.
Sleep problems: Some people may experience sleep problems, such as insomnia, after consuming MSG.
It is important to note that not everyone is affected by MSG and that these symptoms can also be caused by other factors. Additionally, the scientific evidence regarding the connection between MSG and these symptoms is limited, and more research is needed to determine the extent to which MSG may be responsible. If you experience adverse symptoms after consuming MSG, you should speak with your healthcare provider.