Your correct!!
The RDA is WAY too low. It would be impossible to get your levels to 100.
I have been taking 15000 IU in the summer and 20000 in the winter here in Houston. My last test blood levels were 160+. I haven’t had my usual strep and allergies since 2019 when I started. No clot shot and a mild case of Covid in 2021. I am 76.
Your correct!! The RDA is WAY too low. It would be impossible to get your levels to 100. I have been taking 15000 IU in the summer and 20000 in the winter here in Houston. My last test blood levels were 160+. I haven’t had my usual strep and allergies since 2019 when I started. No clot shot and a mild case of Covid in 2021. I am 76.