Hi,thanks for query.First of all it is important to have diagnosis that why he is having low Hb.It is quite low.Look for the reason whether is simply nutritional deficiency or due to some disease like worm infestation or some other problem.He needs medicines for at least 3 months.Along with this give him diet rich in iron like,all green leafy vegetables,jaggery,dates,fruits etc.for medicines you have to ask your doctor.But please take care as this much low iron will affect his learning capacity also.bye.