Calcium lactate provides a nice simple soluble rich source of calcium for addition to drinking water. Vetark Calcium Lactate Liquid Calcium Supplements are designed to help you ensure your reptiles diet meets all his calcium requirements. Calcium deficiency is one of the main health issues for pet reptiles. Vetark Calcium Lactate is a liquid calcium supplement which can be added to your reptiles drinking water and for use with reptiles who can get sufficient vitamin D3 from other sources (terrarium or vivarium UVB lighting). Adding calcium lactate can be an alternative to dusting foods with calcium supplements, which some animals will refuse to eat.