Dronicad 4mg contains the active substance Zoledronic Acid. It belongs to the group of substances called bisphosphonates. It is used to reduce the amount of calcium in the blood in adult patients where it is too high due to the presence of a tumor. Tumors can accelerate normal bone change in such a way that the release of calcium from bone is increased. This condition is known as tumor-induced hypercalcemia (TIH). It is also used to prevent bone complications in adult patients with multiple myeloma and bone metastases from solid tumors (spread of cancer from the primary site to the bone), in addition to standard cancer therapy. Dronicad 4mg is also indicated to prevent or treat osteoporosis (a condition in which the bones become thin and weak and break easily) in women who have undergone menopause. It is also used to treat osteoporosis in men. It is used to treat Paget’s disease of bone (a condition in which the bones are soft and weak and may be deformed, painful, or easily broken). Other uses include treating or preventing osteoporosis in men and women taking glucocorticoids (a corticosteroid medication that may cause osteoporosis). Do not take this injection if you are allergic to zoledronic acid, another bisphosphonate, or any other ingredients of this medicine and if you are pregnant or breastfeeding. Before initiating the treatment, inform your physician if you have kidney or liver problems, bone diseases, pain, swelling, or jaw numbness. This medicine is not recommended for use in adolescents and children below the age of 18 years. Dronicad 4mg is not cancer chemotherapy and will not slow or stop the spread of cancer. However, it can be used to treat bone diseases in patients with cancer.