I read your other comment; I'm still unclear on your motivations. Why would you need, over the course of years, to "de-calcify my vascular system and gut"?

Is this related to some recognized malady which requires lifelong megadoses of Vitamin-D as a treatment?

Does your bloodwork show what is considered healthy levels of Vitamin D, calcium, and related biomarkers after these years of megadoses? Do doctors approve of your regimen & bloodwork results, or recommend against them?