The source of this remedy is calcium carbonate derived from oyster shells. Calcium is essential for healthy bones and for the proper functioning of nerves and muscles.
Adults who respond well to Calcarea are usually fair, flabby and overweight, and have a cold, clammy handshake. Children who respond well tend to be tubby and clumsy, with a chalky pale complexion, coarse skin and coarse, curly hair; they are also prone to head sweats at night. Calcarea types are among the few mortals who actually feel better when they are constipated.