Need some schooling on vitamins and supplements please?

ir3333 said
i thought i read somewhere that no survey has ever shown vitamins and supplements to really have any positive effect.
The only supplements the astronauts take for extended stay in space is vitamin D.The guy running your drug store is not the guy to ask.
That stuff is pricy...ma by it works?

I think the survey that say that the vitamins and supplements don't help we're done by the drug companies.

I would imagine that NASA has any vitamins or nutrients that the astronauts would need in space dialed into their meals.