Vitamin D2 just as good as D3 - better than Vitamin C?

Vitamin D2 just as good as D3?

The race is on to prove that Vitamin D is even more important than Vitamin C and that the Recommended Daily Amount is increased by over 100%

Researchers from Boston University have reported that both vitamin D2 and vitamin D3 forms are equally effective at maintaining 25-hydroxyvitamin D status.

"Our observations suggest that 1,000 International Units (IU) of vitamin D2 or vitamin D3 is required to sustain blood levels of 25(OH)D above a mean of 20 ng/ml, but was insufficient in raising the levels above a mean of 30 ng/ml."

Currently, the vitamin's RDA is 400 IU, but calls have been growing louder to increase this level considerably. The new study appears to support this view.

"One thousand IU of vitamin D2 daily was as effective as 1,000 IU of vitamin D3 in maintaining serum 25-hydroxyvitamin D levels and did not negatively influence serum 25-hydroxyvitamin D levels," said Holick. "Therefore, vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status."