Hi, I'm new too.
I had the same problem, but was informed by an amphibian pathologist at the San Diego Zoo that the reptile vitamins were fine long as they had vitamin A. The calcium supplement should be seperate, because it can damage some vitamins in transport. I've been using a powder and putting it on the food. Of course I have Bullfrogs, which are large and hardy. As long as it goes on the food I'd think it would be alright.
Hope that helps!