I was low on vitamin D (16), this was found Sept. 2011. I took the information you posted on vitamin D and started taking NOW brand D3 5000iu. My D is now 30 (normal range 30-100). The PA for my PCP wrote I should take the 5000iu 2 or 3x a week to assure my D level does not drop again.

I'm thinking it might be best to drop down to the 3000iu daily.

What is your opinion?