What is Vitamin B and why is it necessary?

Vitamins such as vitamin B and vitamin C are often lost by boiling vegetables. Why? A. They are fat-soluble compounds and vegetables do not have much fat. B. The heat of the boiling water causes the vitamin to evaporate C. They are water soluble and...

I hear Vitamin B is good for the heart, metabolism, energy, hair but which is for which? It's so confusing so thanks!

Why would I not just take a Multi-Vitamin, does it make a difference?

My moms friend has breast cancer and ordered vitamin B 17.She doesn't know the instructions or what to take it with.Please answer if you can.

I know that it is a vitamin. but what i meen is what does it EXACTLY do ?? Why should someone take it ? or who should take it ? is it good ? should i take it ? is there something better ? sorry for all the questions but thank you if you answer them.

"I have hashimotos, my doctor had tests done and put me on vitamin D I assume the 50,000 is a standard dose (which was moderately low), but my doctors office called and said that my calcium is fine but that my kidneys are functioning high. They...

I have a vitamin B-12 def. Doctor says I should supplement but I know I can't get it from pills alone. Thanks.

Can any one suggest me best vitamin B complex tablet to have healthy and glowing skin and when to intake it whether in morning or before to bed.