It would seem wise to eliminate both MSG and Aspartame if you have any problems with any of the symptoms related to either additive. Many know of it as related to Chinese Food Syndrome. It is not known for sure if the problems associated with MSG are caused or aggravated by eating things with MSG in them. Reactions to MSG are dose-related. In other words, some people react to even very small amounts.
Reactions can occur immediately or even up to two days later.
MSG is not an allergen. It is a neuro-toxin or nerve poison. Your body reacts to it as it would to a drug. It is harmful to everyone. It is a flavor enhancer that food companies learned could mask bitterness, off flavors, sourness, and the tinny taste of canned foods.