that.
clearly there will be other additives. it's cured and smoked.
op, please post the brand of "bacon" which you purchased.
if you have an issue with msg, please read the wiki article around it's health concerns.
http://en.wikipedia.org/wiki/Glutamic_acid_(flavor)#Research_into_health_effects.
i'm all for keeping the fda and their gras rulings in check, but you'd need to substantiate any claims against msg with hard evidence.
if you're really worried about your health, eating fried fatty smoked meat is probably not a good place to start.
I will happily go to PnP and make a list of the brands tomorrow, dont have any bacon in my freezer atm. The reason I posted this was to find out more about the additives, whether its a positive or negative.