Vinorelbine ditartrate salt hydrate is primarily used in the treatment of various types of cancer, particularly non-small cell lung cancer and advanced breast cancer. It functions as a chemotherapy agent by inhibiting the division of cancer cells, thereby slowing the progression of the disease. The compound is administered intravenously, allowing for direct delivery into the bloodstream to target cancerous tissues effectively. It is often used in combination with other chemotherapeutic drugs to enhance its efficacy and improve patient outcomes. Due to its mechanism of action, it is particularly valuable in cases where other treatments have proven ineffective. Careful monitoring is required during its use to manage potential side effects, such as neutropenia and neuropathy, ensuring patient safety and treatment continuity.