Basically MSG has been found to cause adverse reactions in a certain portion of the population and those with bad asthma....otherwise it is perfectly safe. If you've eaten it before and had no reaction, then it is safe to eat. MSG is a naturally occuring chemical and you metabolize it in your body quite happily. If it makes you feel better to avoid it then go ahead, but there is way too much hype out there. I have eaten MSG for years and never had any kind of reaction to it.