Bosulif, with the generic name bosutinib, is a prescription medication used in the treatment of certain types of chronic myeloid leukemia (CML), a form of cancer that affects the white blood cells. It belongs to a class of drugs known as tyrosine kinase inhibitors (TKIs), which work by blocking the action of a specific enzyme, tyrosine kinase, that plays a role in the multiplication and spread of cancer cells. By inhibiting this enzyme, Bosulif helps to slow down or stop the progression of the disease. It is typically prescribed for patients who have not responded well to other specific cancer therapies. As with any medication, it is important to use Bosulif under the guidance of a healthcare professional, who can provide the appropriate dosage and monitor for potential side effects.