Meet the Jetsons

I never understood why there were Flintstones vitamin pills.
Shouldn’t they be Jetsons vitamin pills?
After all, the Jetsons were living in the future where Vitamin pills exist.
The Flintstones were prehistoric cave-dwelling suburbanite analogs who shouldn’t have things like vitamins or medicine.
But then, the Flintstones had various retro-technological devices like garbage disposals, foot-powered cars, and dinosaur construction equipment.
Why not vitamins, I guess.
And if the show’s popular and all about branding, then I guess it’s okay to have Flintstones vitamin pills.
Still, it would have been fun to bite the head off of that annoying kid Elroy.