Quote Originally Posted by Moonjumper
Or you could be like me and take a mega dose and still just barely get into the range. 20,000 iU a day and I still only hit 88 with range being 40-120. And yes, I take mine with a fat of some sort.
88 is solid. 20,000/day is a crazy amount though. How's your kidney function on that amount? And your liver? D3 is fat soluble, so it can be harmful to the liver in excess.Most say to stay within 60-80. I take 1000/day and that keeps me around 50. I also tan once a week.

I know a guy that consumes lots of D3 in supplements and in enriched dairy and he can't get his levels higher than 25, so I guess there's a minority out there like you and him