HPLC is high-performance liquid chromatography, which in this context is used for the same purpose of hemoglobin electrophoresis, to determine the percentages of the various types of hemoglobin.
Intermedia thals vary greatly, so hemoglobin monitoring will also vary greatly. If the Hb is borderline and transfusions may be considered, monthly checks of Hb would be appropriate.
Resveratrol is a naturally occurring substance found in red grapes and other plants. It is the subject of much study into its use in many conditions. In the context of thalassemia, its ability to raise hemoglobin levels is of great interest.
For a young child, I prefer the wheatgrass supershots, as they are so easy for a child to take. Check
http://www.drwheatgrass.com/wheretobuy/outside_aust/default.htm for ordering.