Jakavi 10mg Tablet contains the active constituent ruxolitinib. It is an anticancer agent that belongs to the class of kinase inhibitors. It is used to treat myelofibrosis (a rare type of bone marrow cancer that causes decreased blood cell production). It is also used to treat polycythemia vera (a type of blood cancer where the body produces too many red blood cells) in people who are resistant or cannot be treated successfully with other medication (hydroxyurea).