It's interesting that multi-vitamins sometimes have D2 instead of D3. What does that mean? Vitamin D2 is from plants, it's ergocalciferol. It comes from plants that are irradiated by sunlight ...

Vitamin D2 doses are equivalent to the same dosage amount of vitamin D3 ... of vitamin D is up to 600 IU daily for adults.

The vitamin is important in helping your system absorb the calcium it needs to maintain strong and healthy bones. We also need vitamin D to support various other functions and systems in the body. But ...

Many people are turning to vitamin ... the dosage taken can differ significantly from person to person in terms of age, weight, location, and overall health. The recommendation for most adults ...

and there have only been a few clinical trials of vitamin D2 to prevent bone fractures in adults. Vitamin D3 is more effective at raising and maintaining the vitamin D blood test (again ...

The recommended dosage for vitamins D2 and D3 supplements varies based on ... Infants 0–12 months: 400 IU (10 mcg) Children ...