There are two types of vitamin D supplements available for over-the-counter purchase (vitamin D2 and vitamin D3 ... Wool sources of 7-dehydrocholesterol are used (from cholesterol), and ...

Vitamin D has two forms: D2 and D3. Vitamin D2 comes from plant-based sources. Vitamin D3 is found in some fish and produced ...

vitamin D2 and D3 are called out on various labels, too. What exactly is the difference between D, D2, and D3? Are they all forms of the same vitamin, or is each one a completely different nutrient ...

The most common vitamin D compounds are vitamin D2 and vitamin D3, which come from different natural sources. Doctors generally prescribe vitamin D2 supplements if you have a vitamin D deficiency ...