Please understand, I do not suggest anything, sort of. I am only telling you what I do and what has worked for me.
Your problem is, you have to make your own decision. Just make it. Its not going to change the world either way.
Whats so funny to me is, there is no magic bullet that kills your monitors or fixes them either. Normally bad enviornmental conditions causes calcium absorption problems, not lack of calcium or lack of D-3.
All of this complex of problems is slow on onset and easily fixable. In other words, do you see or have a problem, then why on earth are you trying to fix it? As the old saying goes, don't fix what ain't broke.
For me, its turned out over the years, that monitors that eat rodents, from pinkies on up, have no need for any sort of suppliments. Monitors that eat primarily insects, do need both calicum and vitamins as a suppliment. It seems pinkies have a very high calicum content, wonder what that big white ball is in the middle of them?
You have to remember, we allow our monitors to run hard, that is, they breed, multiclutch, grow fast, etc. Still with rodent feeders, there is no need. As an example, my old bag female cross is breeding for her third clutch this year, her 49th clutch in her 9th year of life, and has never had any suppliments of any kind. THERE IS NO NEED. She never had a problem.
Again my concern is and always has been, why is it so common to worry about things that are not a problem, when theres so many problems that do need worrying and fixing. Good Luck FR