I’ve used Repashy LoD for a month on my young cham. No noted issues so far and sheds seem fine. I know the Kammers recommend the Calcium Plus like I believe the OP is currently using and they report no observable issues over multiple generations of chams. This is always an interesting topic to me. I think it’s possible, like humans, that genetics play a role in how different supplements are absorbed (or lack thereof). I agree that if you are experiencing issues that you can’t otherwise account for, a change in supplementation is warranted. Just monitor your cham closely as you make changes.