Used primarily as an anticancer agent, especially in the treatment of ovarian, breast, and non-small cell lung cancers. It works by stabilizing microtubules, preventing their disassembly, which inhibits cell division and leads to apoptosis in rapidly dividing cancer cells. Also used in the treatment of Kaposi's sarcoma and other solid tumors. Commonly administered intravenously due to poor oral bioavailability. Frequently part of combination chemotherapy regimens. Its effectiveness has led to widespread clinical use despite potential side effects like neuropathy and myelosuppression.