Ibandronic acid belongs to a group of drugs called bisphosphonates. Bisphosphonates are commonly used to treat bone thinning (osteoporosis). In certain situations they can help protect your bones against some of the effects of secondary bone cancer, such as pain and weakness. Secondary bone cancer occurs when the original (primary) cancer spreads to form a new tumour (secondary cancer or metastasis) in the bone.
Ibandronic acid can be given alongside other cancer treatments. It may be given to women with breast cancer that has spread to the bones. It can be used to prevent and treat problems caused by secondary bone cancer and to reduce a raised calcium level in the blood.