Does progresso soup have have msg in it?

You'll have to check individual cans, those with no msg are usually marked no msg. however unmarked cans may not have msg. Several websites list ingredient names that are synonymous with msg. If you don't know what a particular ingredient is look it up. Things like Autolysed yeast paste are almost pure msg. "Brewer's yeast" is autolysed yeast. (the yeast eats itself [autolysis] after using up available sugars producing among other things glutamic acid compounds.)