Chlorambucil is a medication primarily used in the treatment of certain types of cancer, particularly chronic lymphocytic leukemia (CLL) and Hodgkin's lymphoma. It belongs to a class of drugs known as alkylating agents, which work by interfering with the DNA in cancer cells, preventing them from dividing and growing. This drug is usually taken orally in tablet form and is often prescribed when other treatments are not effective or suitable. While Chlorambucil can be effective, it may also cause side effects, including nausea, fatigue, and an increased risk of infections due to its impact on the immune system.