I wouldn’t make recommendations. People who do account for the lesser body size of children.
I’d say to do a web search. There’s the government recommendation and the recommendations of the vitamin D advocates.
-——I wouldnt make recommendations——
I know, I am seeking testimony and actual experience for reference.
I have been careful to provide info rather than specific recommendation.
For the record, In August I went for my biannual bout of lab tests. My physician is part of a large medical group. At the checkout counter they had a display with several supplements packaged in their own brand. One was Vitamin d3 in 1500 IU gelcaps. It has not been there before.
For them to go to the trouble to buy it under their own name for resale to patients is telling.