Hi, so I have looked through all the herptile shops in Hong Kong today (that are listed in the phone directory) and they only stock Rep-cal WITH D3. I prefer not to buy stuff online so I am going to try to replace it with a human version tablet crushed up and dusted. For vitamins and other minerals I will use centrum which I take myself daily so I don't need to go looking. So I went to the local drugstore and most of the HUMAN calcium tablets have D3 in them too! They must be trying to make me mad... Anyway, the two brands I found that were only calcium were: 1) Caltrate - made by Wyeth, and come in various forms, one is only calcium carbonate with no other funky stuff, at least doesn't say on the label. It is WAY overpriced and also the tablets look hard to crush. 2) Calcium Sandoz Forte - It doesn't list Vitamin D in its ingredients, but it says that it is contra-indicated in cases of vitamin D overdosage... It does have other stuff in it though, it lists: Calcium-Sandoz Forte: Each whitish, effervescent tablet contains: calcium lactate-gluconate 2 940 mg, calcium carbonate 300 mg and provides 500 mg (12.5 mmol) elemental calcium. Nonmedicinal ingredients: calcium cyclamate, citric acid, flavor, polyethylene glycol, sodium hydrogen carbonate and sucrose. Energy: 74.5 kJ (18 kcal). Sodium: 12 mmol (274 mg). The latter is much cheaper and the tablets are meant to be disolved in water and drank, so they can easily be crushed. Does anyone know if either of these are OK to use on my Iguana and which one may be better?