I have been taking 5000iu of Vitamin D3-5 daily for five years.
I know it’s just anecdotal, but I have not been sick during that time.
It’s cheap. Buy it at Wally.
What’s your total daily dose, 25,000 IU of vitamin D3?
My doctor has me on 4000 of D3 along with the fosomax to rebuild bones. But he said the fosmax could only last for three years — then the possibilities of damage occur.