I'm pretty sure I have. I don't exactly know what brand, but I think it's zilla because I'm not at the house with my chameleon right now.
It smells really bad, but it's good if your chameleon has MBD. What I do, is when I supplement with light dustings on some crickets and dubis and supers, I get him to gape at me and then give him a little squirt of calcium in his mouth. Just a wee bit.