Quote Originally Posted by glocktogo View Post
I take Vitamin D daily and my most recent lab results still showed deficient. So I've doubled the dose to see if that helps.
What was the dose? What where your 25OHD levels? See also article I posted above on how to achieve levels. Finally, magnesium essential for vite D and mag deficiency are common in the US. Have that tested too and or consider adding a mag supplement:

https://www.medicalnewstoday.com/articles/324022