In the 50s, MSG (flavour enhanser) was in every can you bought, including Campbells soups. My mother even sprinkled it into her homemade stuff(Another headache causer).
I wish the FDA would protect us from these various chemically created preservatives, dyes and flavour enhancers...and no/little salt added. If the Mfgs cook their heat & eat food with the proper ingredients - a little broth, salt & pepper, there would be no need for artificial additives.