Flintstones Chewable Vitamins are one of the most successful Flintstones products. Some television and print advertisements have been under heavy rotation without being related to The Flintstones. Their jingles of "We are Flintstone kids!" and "Ten million strong and growing!", composed by Martin O'Donnell, have reached fame through the heavy circulation of advertisements. The vitamins are shaped like the following characters: Fred Flintstone, Wilma Flintstone, Pebbles Flintstone, Dino, Barney Rubble, Betty Rubble, Bamm-Bamm Rubble and the Great Gazoo.