[3][4] It is the oldest cereal brand based on characters from a TV series or movie that is still sold.

The Canadian version, no longer available, came in the form of pebble-shaped puffs composed of whole wheat, cornflour, and oat flour.

Both Fruity Pebbles and Cocoa Pebbles were reformulated in the early-2010s industry-led sugar reduction effort: the original formulation contained 12 grams per 3/4 cup serving, while the 2011 reformulation (still current as of 2024) contains 9 grams sugar per 3/4 cup serving.

Upon Post's acquisition of MOM Brands in 2015 (the former Malt-O-Meal), both the Cocoa and Fruity versions of Pebbles, along with other Post brands, began to be offered in packaging similar to that of Malt-O-Meal's discounted generic line of bagged cereals alongside the traditional box sizes.

Post has also licensed other food companies to put out other food products that bear both the Fruity and Cocoa Pebbles flavors including protein powder, white chocolate bars (with the actual cereal mixed in), ice cream (with or without the actual cereal in it), crisps, and Fruity and Cocoa Pebbles Marshmallow Treats (like those made with Rice Krispies), among others.

[citation needed] The earliest commercials produced by Post's ad agency D'Arcy Masius Benton & Bowles with cooperation from Hanna-Barbera featured the animated duo Fred Flintstone and Barney Rubble (as voiced by Alan Reed and Mel Blanc, respectively) interacting cheerfully with live-action children, eating the cereal around a typical household breakfast table; others showed Fred and Barney enjoying the cereal with their wives around their Bedrock breakfast table or in other locales and situations in Bedrock.

WWE professional wrestler John Cena is an official endorser of Fruity Pebbles as the result of references to the cereal made by Dwayne 'The Rock' Johnson over the course of 2011, where Rock nicknamed Cena (a bowl of) Fruity Pebbles based on his bright shirts.

In May 2010, a controversial commercial of Cocoa Pebbles led to a lawsuit by WWE wrestler Hulk Hogan.

In the spring of 2010, a commercial where Barney and Fred face off against a wrestler named Hulk Boulder aired on TV.

The commercial ended with Hulk Boulder getting smashed to pieces by Bamm-Bamm after losing the wrestling match.