Introduced in 1923, Kellogg’s Pep cereal was one of the first products to be infused with vitamin additives, beginning in the 1930’s. It was a strong point of their advertising campaign, along with the “mildly laxative” effects, and the product was a sponsor of the long-running radio serial “the Adventures of Superman” (1940-1951). Despite its purported health advantages, public tastes changed, and by the late 1970’s the product was discontinued.
History Undusted 