I take 5,000IU of D3 daily. Dr cut me back from 10,000IU daily. I also take 9 other pertinent vitamins.
The vitamin D3 will do a lot to preserve your life.
Of course, there is only one way for anyone to know they are taking enough D3 - test their blood serum level of D...
Short of that, no one knows if 5,000 is the right number.
Keep,aspirin handy too and take at first sign of sickness- it’s supposed to cut way down on covid turning deadly- something to do with thinningmthe blood. Supposedly,it cuts risk down by over 60%