[PallMal]

For me, 10,000 IU a day for most days, 7 or so years now.

Haven't gotten any severe colds in all of that time (maybe two head colds).

[caww]

I do half that at 5, 000 ....two years now but I did have a Vit. D deficiency....No colds but it doesn’t appear to do anything for allergies.