Hydrea - antineoplastic medicine, antimetabolite, slows down DNA synthesis. It is used for treatment of acute and chronic myelogenous leukemia, osteomyelofibrosis, erythremia, essential thrombocythaemia, thrombocytosis associated with myeloproliferative syndrome, lymphogranulomatosis, melanoma, ovarian cancer, horionepitelioma of uterus, tumor of the head and the neck, tumor of brain, an acute lymphoblastic leukosis at children, a colon cancer, a prostate cancer, cancer of a lung, cancer of a neck of uterus (for increase in efficiency of radiation therapy).