Used primarily to treat thrombocythemia, a condition characterized by excessive production of platelets in the blood. It helps reduce platelet count, thereby lowering the risk of blood clots, strokes, and heart attacks in patients with myeloproliferative disorders. Works by inhibiting the maturation of megakaryocytes, the bone marrow cells responsible for platelet production. Often prescribed when other treatments like hydroxyurea are not suitable or effective. Helps manage symptoms such as headaches, dizziness, and numbness caused by high platelet levels. Requires careful monitoring due to potential side effects on the heart and liver.