That's ironic b/c I personally know physicians who prescribe 10,000 IU on a regular basis.
If they are doing it without bloods, that would be a deviation from the standard of care. Bloods need to include both calcium, 1 ,25 and magnesium. High levels or upper range if calcium will cause lower levels of D. When body has enough calcuim, less D is needed and levels will drop. That does not mean your deficient. Higher D intake also needs higher magnesium intake to convert D to active form.
Candidly, a lot of doctors don't understand D very well and new research isreflrcting too much is worse than too little. 10,000 ius prescribed by doctors should only being going to geriatrics, post menopausal or a series of bloods confirming need. You take what ever you want, but realize there us no benefit and you may be giving yourself hypertension and cardio vascular issues long term. Seriously, there are a lot of jacked people on here who take supps like this thinking it's good cause bro science says. Then you see some if these same guys asking got supps to help with libido while in there 20s because they are so jacked up.
I fortunate to have a combo endo dietician wife that works with professional athletes to rehab after Dr. andrews and his staff gets done with them and I was a professional athlete under Dr R. Morgans care for more years than I like to admit. She is one of the premier Eropean trained endos in the world who has worked with Russian and now US Olypmic teams since 1980s. Haha, the money I have spent to learn what I am passing on . . .
