We take 4,000 units of D3 daily with K2 and zinc.
“We take 4,000 units of D3 daily with K2 and zinc.”
Yep that is a reasonable level. Also need to marry D3 with K2 to reduce calcification of arteries - which you are doing.
I was admittedly a bit slow in figuring that part out and was taking larger doses of D3 and then doctor spotted the calcium buildup. Of course the calcium buildup could have been due to food and other factors besides D3.
Nonetheless I’ve now reduced D3 down to 5000 although I’ve read 4000 is the recommended max level.