<s>[INST] Hi, my dad is 97 yrs old. His haemoglobin content is around 8 since the last 3/4 months. have been giving iron syrup(Dexoorange_) and also  leafy vegetables  twice a week. It sort of improved become from 7.8 to 8.3. Cannt give more iron supplements as he tends to constipate. Advice please as to how to improve ? [/INST] Without knowing cause of anemia iron treatment may not work. First search cause. It may be due to iron deficiency or b12 deficiencies or may be did to renal disease or some other cause like internal bleeding etc. So roughly investigate all these.  For iron deficiency iron rich food like beggary and Green leafy vegetables, Chat Doctor. Iron tablets syrup and injectable form also available.  Injectable iron will provide faster response. </s>