Hello,
MSG is produced by fermenting natural ingredients such as molasses, corn,
wheat, soybeans, sugar beets, sugar cane, tapioca, and other vegetable
It could have milk in it but I am not sure of which brands carry what.
Here are a couple of web sites devoted to MSG. I hope this will help.
Good Luck,
Lucy
The Gluten Free Kitchen
http://home1.gte.net/lbshri
Battle the MSG Myth http://www.msgmyth.com/
Migrane Headaches and MSG http://www.magicnet.net/~btnature/