Hi
The best calcium for beardies IMO is repcal(ultarfine) w/d3 for flourescent uvb and w/o d3 for MVB bulbs.As for multi I would use herptivite.I have tried many and those are by far the best.As for the dragon dust,the problem with this is that it is a combo vitamin and thus you end up dosing different vitamins in varying degrees.There is no way to ensure that today your beardie got enough calcium because of the mix.As for dosing, babies should get calcium 5xper week once daily and multi 2xper week once daily and this slowly tapers off until you reach adult and at that point 2-3xper week on the calcium and 1-2xper week on the multi with the exception of gravid females who should be dosed like a baby or juvie.
Oh sorry, that was worded weird wasn't it? It's a good thing to not have vitamin A since added vitamin A can lead to toxic levels for beardies. Vitamin A is found in most of the vegetables they eat and it and is fat soluable and stored in the liver so their bodies don't get rid of it quickly. Too much of a good thing is a bad thing, it's all about balance. Also, I believe vitamin A does something to prevent calcium obsorbtion.