How long do the side affects of MSG last?

The duration of side effects from monosodium glutamate (MSG) can vary depending on the individual and their sensitivity to it. Generally, any symptoms, such as headaches or flushing, may last from a few minutes to a few hours after consumption. In some cases, individuals might experience longer-lasting effects, but this is less common. If someone experiences persistent symptoms, it's advisable to consult a healthcare professional.