Using other medicines: Please tell the doctor if the patient is taking or has recently taken any other medicines, including medicines obtained without a prescription. This is especially important if the patient is taking a drug called pentostatin or deoxycoformycin (also used to treat chronic lymphocytic leukaemia) as a combination with Fludalym is not recommended. Some drugs, e.g. dipyridamole (used to prevent excessive blood clotting) may reduce the effectiveness of Fludalym.