i guess its hard to say whether over or under supplementation is worse. i'd appreciate more feedback from the more experienced keepers. i dust lightly with calcium twice a week, and the salad gets a daily light dusting of multivitamin, although the consumption of salad isnt too great so there's no danger of overdose there!
i use the jurrasipet stuff;
jurrasi-cal - phosphorous free, vit D3 free, calcium carbonate
jurrasi-vite - vits A, D3, E at 100:10:1 (14 vitamins & 17 trace minerals)
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Ross
0.1 Bearded Dragon (Fuego, spent the last 10 months thinking she was a he!)
2.1 Roommates (require more cleaning up after than the dragon)