FYI, when vitanin-d was tested for over dose issues, nobody had issues until 300 ng/ml and those were quickly and easily reversed by reducing intake. Because of funding, they didn't get o look at optimal, but the limit was arbitrarily set a 100 ng/ml. Now doctors don't want to get near the limi, so they arbitrarily set 40 ug/ml as goal. …
FYI, when vitanin-d was tested for over dose issues, nobody had issues until 300 ng/ml and those were quickly and easily reversed by reducing intake. Because of funding, they didn't get o look at optimal, but the limit was arbitrarily set a 100 ng/ml. Now doctors don't want to get near the limi, so they arbitrarily set 40 ug/ml as goal. 100 ug/ml is probably near optimal and a little higher, like 150 ug/ml is totally fine and worked well for me. (When I was above 100 ug/ml I never got sick, but since I dropped down to 80 ng/ml I have). Also the tests ignored vitamin K2 which reverses the hypercalccemia, so you actually might be able to safely go higher if you have equally high K2 levels.
FYI, when vitanin-d was tested for over dose issues, nobody had issues until 300 ng/ml and those were quickly and easily reversed by reducing intake. Because of funding, they didn't get o look at optimal, but the limit was arbitrarily set a 100 ng/ml. Now doctors don't want to get near the limi, so they arbitrarily set 40 ug/ml as goal. 100 ug/ml is probably near optimal and a little higher, like 150 ug/ml is totally fine and worked well for me. (When I was above 100 ug/ml I never got sick, but since I dropped down to 80 ng/ml I have). Also the tests ignored vitamin K2 which reverses the hypercalccemia, so you actually might be able to safely go higher if you have equally high K2 levels.