Zoledronic acid belongs to a group of drugs called bisphosphonates. It can be used to:
- help protect the bones from the effects of some treatments for early breast cancer
- reduce the risk of early breast cancer coming back – this is called adjuvant treatment
- reduce a raised calcium level in the blood caused by cancer that has spread to the bones
- treat bone weakness or pain caused by myeloma or by breast cancer that has spread to the bones.
Early breast cancer means the cancer has not spread beyond the breast or nearby lymph nodes.
Cancer that has spread to the bones is called secondary bone cancer. It happens when cells from the original (primary) cancer spread to form a new tumour (secondary cancer or metastasis) in the bone.
Myeloma is a cancer of a type of blood cell called plasma cells. The abnormal plasma cells build up inside bones causing pain and weakness.