Hi fatinsyakirah and welcome,
The standard dose for Exjade is 30 mg/kg, so her dosage by that formula would be 540 mg daily. 625 is not out of line. It is slightly higher, but this will be a positive, as it will help clean out the existing iron load and help to prevent additional iron loading from taking place. Also, as she grows, the higher dose will be necessary. Also, keep in mind that Novartis has now approved the use of Exjade with a variety of soft foods and juices, so if any problems arise, you can try other foods. It is recommended that the Hb is not allowed to drop below 9, and since she is now chelating, this low threshold should be observed so that proper growth and development takes place.