I agree,and they should put fine print on the label since there are lots chameleon keepers do use the Rep-cal Herptivite,did u read any negative comments for the Rep-Cal users??The company needs to make the special formula on the cham only,rapshy has gecko supplement,so do other brands too.I only keep chameleons so it's just a guess but since RepCal is targeted at a wider market this sensitivity may be unique to the biology of the chameleons. Given that different species of chameleon even seem to have different needs for this vitamin it may be something where different reptiles have vastly different requirements and who knows what species or research rep cal based its dosage amount off?