Please keep in mind that according to the Mayo Clinic a normal adult needs no more than 600 UI per day.
It’s not a water-soluble vitamin so you can take too much and cause harm.
Disclosure: I just looked this up yesterday after buying a Buy 1/Get 1 of 220 doses of 2000 UI vitamin D! I thought it was water-soluble, and I could just take it and excrete what my body didn’t need. I bought enough to kill myself, many times over…
guyrocket