Canada now has a law that requires food manufacturers to label their products clearly if they have gluten or MSG in it. This information can be found in the ingredients section of the label.
Since MSG commonly contains gluten, the person who is trying to avoid gluten must be aware of this.
However MSG is potentially toxic to all persons, it is neurotoxic, crosses the blood-brain barrier which is the protective barrier to the brain and more.
Some information about MSG is presented by http://www.dorway.com/msg2.txt
When consumers refer to MSG they are referring to PROCESSED FREE GLUTAMIC ACID. If glutamic acid hasn't been processed, it doesn't cause adverse reactions. MSG is MANUFACTURED (and it has 30 different names... why?) MSG is NOT FOUND NATURALLY IN FOOD or in the human body. MSG is NOT IDENTICAL TO FREE GLUTAMIC ACID THAT HAS NOT BEEN MANUFACTURED.
The glutamic acid found naturally in human beings and other higher organisms is not MSG. MSG enters the body through the mouth, through the nose, through the skin, and through the placental barrier. MSG can enter the brain through the blood brain barrier, which is incomplete through childhood, never intact in certain regions of the hypothalamus, and is easily damaged by things like a blow to the head, high fever, seizures, stroke, and the normal process of aging. MSG is potentially toxic to everyone.
Glutamic acid, also called glutamate is a natural food for the enterocytes, or cells lining the bowel. It is useful to heal the bowel and is found in gelatin. In the Gut and Psychology Diet protocol gelatin is used for this reason. Using gelatin, which is not processed allows the consumption of glutamate without the risk of getting MSG from processed sources.
Persons with celiac disease and gluten sensitivity must avoid MSG !
And ,regularly take some foods with gelatin in it!