If you have a vitamin D deficiency - for which the treatment is vitamin D - which form should you take take?

The best form of Vitamin D to take is Vitamin D3. This is because D3 is the same type formed naturally in your body when you are exposed to the sun. You wouldn't want to stay outside for very long because of the obvious damage the sun may do.

To receive the amount found to be most beneficial by today's experts (2000 IU) it's recommended that a dietary supplement be taken.