Hi Virr! I have been on the D3 Regimen for years now. Since 2011 or 2012, can't remember for sure. I have my D3 levels checked yearly. This year my number was 124 measured by US standards. This was higher than my normal 103. So, I decided to cut back on the D3 to 5,000/day instead of the 10,000/day I have been taking. Guess what? I have been slammed with O2 resistant hits. Normally I am nocturnal, but these were hitting day and night. So, upped my D3 again and took a dose pack of Prednisone.
It has taken 6 days to get back on track mostly. I am not pain free yet, but I am getting there.
Now, you might ask why I did this. Because the doctors stick with 100 as a top number here. Above is safe if your other tests are good. But, I listened to my old doc and sent myself straight to Hades. Never again unless something unforeseen steps up and messes with it! The medical profession needs to catch up and keep up. They do not and likely will not. You are your own best advocate.
ATB