I was actually taking 4000iu + another 400iu from a multivitamin pill daily so I'm now going to stop the 4000 and in the darker winter months where I see very little daylight because of my shift pattern maybe take another 1000iu, I just hope I've not done any damage because I was taking the 4000 for a few years!
I've now binned my 4000iu pills!
https://www.vinmec.com/eng/blog/6-si...h-vitamin-d-en