Pep was a brand of whole-wheat breakfast cereal produced by the Kellogg Company, and introduced in 1923, which became the first to be fortified with vitamins B and D in 1938.
Pep was included in "variety packs" of serving-sized boxes of Kellogg's cereals.
The cereal was still being sold alongside the company's similar Bran Flakes in Canadian markets until the early 1990s.
[4] In 1945, Kellogg inserted a prize in the form of pinback buttons into each box of Pep cereal.
[5] Mint condition Pep pins, as with prizes from many cereal brands, have become sought-after collectables.