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 can be purchased in grocery stores and pharmacies as well as online. For over 20 years, Betty was not included as one of the vitamins. However, after a grassroots campaign and the results of a Bayer telephone poll came in favor of including Betty, she was added to the lineup, replacing the Flintstone car.