There are several vitamins.
They are;_ A, B1-12, C ,D1-5, E, & K1-2. Which vitamin are you thinking about?
In terms of gram weight mass, even as adults we only need micrograms, on a daily basis to maintain a healthy life-style. Different vitamins ' different masses'.
'A' aids vision
'C' aids the immune system.
With a degree of exposure to sunlight , we automanufacture vitamin 'D' ; the sunshine vitamin.
I suggest you look in Wikipedia, under 'Vitamin'.
20-25 grams for a kid. Adults need 25-30 grams.
27 grams.
225 mg
It's just a vitamin, so, yes, but you wouldn't need to as so many other vitamins are much less expensive.
15 grams
about a bakers dozen
Fluoride and Vitamin D.
17,422 grams a day.
about 300 grams an hour.
50 cent made 700 million between 2005 and 2007 on vitamin water
60
Fluoride and Vitamin D.