Quote Originally Posted by Arik View Post
It was just coincidence that started a few years ago. My doctor noticed I had low D, like 12 nmol. So had me take supplements, I think it was only like 2000 IU. The next year it went up 23 nmol or so. I started taking 3500 IU without recommendations and by next year I was in the mid 30s nmol. Then covid hit and I did some research and found out that it's really really hard to OD on vD so I started taking more. Right now I take 8000 IU and have been for about a 6 months.

I know somewhere I'm getting my IU wrong because originally I was buying 1000 IU bottles then switched to 2000 but since about Christmas time I've been taking 4x2000 IU daily.

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5k IU seems to be the starting dose for most, 10 even 20k IU, not uncommon to get levels where needed, and there's racial differences there also. Best way to dose, always, is via labs, or it's all a WAG. Best article on that topic:

https://brinkzone.com/vitamin-d-what...to-achieve-it/