Dasatinib is a medication primarily used to treat certain types of blood cancers, particularly chronic myeloid leukemia (CML) and acute lymphoblastic leukemia (ALL). It works by inhibiting specific proteins that promote cancer cell growth, helping to slow down or stop the progression of the disease. This drug is taken orally and is often prescribed when other treatments have failed or when patients have specific genetic mutations. Like all medications, Dasatinib can have side effects, including fatigue, nausea, and increased risk of infections, so monitoring by a healthcare professional is essential during treatment.