You get 700-800IU from a multivitamin, and then I supplement with a 1000IU gelcap.
I also try to get some D in my diet, maybe in eggs or a little fatty fish.
They say you should keep it under 4000IU.
Any idea of the daily dosage that you're taking that "turned the light on"?
That is interesting. I am just doing the multi-vitamin thing, not considering supplements at this point. I do drink 4 oz of orange juice each day as well, and I guess I could drink some more milk each day.