I give my son a multivitamin in liquid form as his pediatrician recommended that its better for their teeth. Plus some kids dont like the chewy ones.
Believe it or not toddlers as early as 2 begin to get cavities.
My kids didn't like the Flinstones either until they were a little older...like 4 and 5. The gummy vitamins are a great reccomendation.
I use the gummy vitamins. My boys enjoy the different flavors--we tried the other chewables like Flinstones--they don't like them--I don't use thegumball ones though--just I don't want them to get them confused with the regular bubble gum I give them on occassion.