Cycloxan 50mg tablet is a chemotherapy drug containing the active constituent cyclophosphamide. It is used to treat various malignancies (abnormal production of cells is called cancer; if they spread, those are called malignancies). This tablet can be used to treat malignant lymphomas (cancers that start from the lymphatic system of the body- vessels, fluid, and lymphoid tissue) such as Hodgkin’s disease, lymphocytic lymphoma, and mixed-cell type lymphoma.