Dr Reckeweg Calc Carb Hah 30 Ch Dilution 11ml is used for supporting bone and joint health. This formulation is designed to help promote relief from respiratory issues, such as breathlessness and chronic colds, as well as digestive disturbances like sour belching and colic. It may also support healthy menstrual cycles and provide support for bone and joint health. The key ingredient, Calcarea Carbonica, is derived from oyster shells through a meticulous trituration process, enhancing its therapeutic properties.