can you get vitamin b from the moon?

Answer 1

you're thinking of Vitamin D which we get from the action of sunlight on our body. The light reflected from the Moon is too weak to be of any use in Vitamin D production.

Answer 2

According to: http://en.wikipedia.org/wiki/B_vitamin

"Vitamin B comes from a number of natural sources, including potatoes, bananas, lentils, chilli peppers, tempeh, liver oil, liver, turkey, and tuna. Nutritional yeast (or brewer's yeast) and molasses are especially good sources of Vitamin B. Marmite and the iconic Australian spread Vegemite bills itself as "one of the world's richest known sources of vitamin B". As might be expected, due to its high content of brewer's yeast, beer is a good source of B vitamins[4]--in fact, beer is sometimes referred to as "liquid bread"[5]--although this may be less true for filtered beers[6]and the alcohol in beer impairs the body's ability to activate vitamins.
Another popular means of increasing one's Vitamin B intake is through the use of dietary supplements purchased at supermarkets, health centers, or natural food stores.
B vitamins are also commonly added to energy drinks."

There is no food on the moon- nothing growing so no, unless an astronaut left some food that contains Vit. B then the answer would be no.

Answer 3

only if you take them with you

Answer 4

No.