Supportive therapy Treating the symptoms of aplastic anaemia with blood transfusions Supportive therapy is used to treat the symptoms of aplastic anaemia, such as low red blood cells and platelets, with blood and platelet transfusions, and anti-microbial medication to prevent and treat infections. Most patients with aplastic anaemia who need treatment will require transfusions of red blood cells and platelets. The threshold for receiving red cell transfusion varies from patient to patient, and is dependent on patient and disease related factors. You can read about why transfusions are needed, how they help and what some of the more common side effects are by downloading our informative leaflet here. The leaflet has been developed with kind and informed help from the King's College Hospital Haematology Team, London.