Yep, had my level tested and it was 11.
Doc put me on super high dose for awhile and then I supplement everyday with high doses I buy over the counter....6,000 per day. I am more religious about it during the gray, winter months. I am outdoors a lot in the summer and get more natural exposure.

They have also found the low D3 levels common in many other diseases as well.
Can't say I feel any better having brought my D level up, but I think it is not a "feel good" thing......its a health issue. Ignore all the Fed's recommendation of 400 iu a day, thats just plain stupid. Don't go less than 2000 iu's.

Dr Oz had a show on Vitamin D3 today and how low levels in the human body is showing up in many bad health issues.

Watch him dvr'd as I eat dinner every night except weekends. See how he acted when people had levels only in the 20's? Wish my sister would listen to me.
I was told yrs ago to take D by professor that has MS. He takes 10,000/day, I took 8,000/day till I tested a bit high - 120. I stopped taking it for a few months & since restarted taking 2000iu/day for past yr or so. My level's staying around 88. I'm also in the south & exercise daily in the sun.
Sadly i'm still going downhill but when my level was 120, I felt the best & MS progressed slower. 120 might be safe but i'll reserve my liver & kidneys for the handfull of other meds I take..for now.