How much vitamin d should I take daily to solve my vitamin d deficiency? (currently around 10 ng/ml) my doctor prescribed only 800 iu daily.

Ergocalciferol . Typically, i prescribe ergo Calciferol 50, 000 iu 1 time per week for twelve weeks and then recheck. You may need a larger dose than the 800iu daily to really increase your levels in a sufficient way. Current targets are still up for debate, but most guidelines suggest a target 25 oh vitamin d level of 30 or higher.