concern for most. A 2006 study showed that adults who took 100,000 IU of vitamin D daily for 4-6 months showed no signs of acute toxicity. [20] Blood levels of vitamin D over 150 ng/ml are considered toxic [21] but I see no reason to be over 80 ng/ml for any length of time.
https://www.huffpost.com/entry/why-would-i-be-low-in-vitamin-d_b_8546144