Calcium Carbonate + cholecalciferol + lysine belongs to the class of ‘Multi-minerals’ primarily used to treat low blood calcium levels. It is used in the treatment of various conditions caused by low calcium levels in the body, such as osteoporosis (weak and brittle bones), hypoparathyroidism (low levels of parathyroid hormone) and latent tetany (a muscle disease with low blood calcium levels), osteomalacia/rickets (weak bones). calcium carbonate + cholecalciferol + lysine can also be given to pregnant, nursing, and postmenopausal women to ensure that they are getting enough calcium.