I don't know. I suspect that while they are actively growing it doesn't hurt to "pour it on." As they mature then cut back.
Another view comes off the Rep-cal label that discusses calcium/phosphorus ratio and maintaining 1.5:1 Ca
ratio is ideal. It goes on to say that bone meal contains phosphorus(bad) and their phosphorus free oyster shell is better.
And we haven't begun to discuss the importance of good UV lighting to the equation...and changing the bulbs every 6 months to keep them "fresh." According to my vet those Home Depot bulbs don't work. The more UVB the better. My tegu was outdoors at the time but I ran out a bought a Repti-glo 8.0 for when I brought them indoors.
I think as long as the diet is a good mix of fruit, mice, eggs, dusted and plain crickets, etc. And good lighting, there
shouldn't be a problem.