The side effects seen most commonly (in more than 1 patient in 10) are anaemia (low red blood cell counts), thrombocytopenia (low blood platelet counts), leukocytosis (high levels of leukocytes, a type of white blood cell) and increased levels of liver enzymes in the blood (bilirubin, alanine aminotransferase, aspartate aminotransferase, gamma glutamyltransferase and amylase).