Autohemotransfusion (LAH – Large AutoHemotherapy) – intravenous, the most effective form of ozone therapy. It consists in taking the patient’s blood into a vacuum bottle, to which an oxygen-ozone mixture is then added. Subsequently, ozone saturated blood is administered back to the patient’s body, intravenously, in a closed circuit. The procedure lasts about 15 minutes, requires one intravenous injection.