The object of protection of the "Transfer Factor" medicament, its manufacturing and clinical use. The manufacturing includes: technological conditions of leucocytes concentrate preparation, its dialysis or ultrafiltration, concentration by lyophylisation, raw medicament solution preparation, sterilising filtration and termic inactivation and final lyophylisation. The technology of manufacturing should ensure standard preparation of stabile sterile medicament clinical use describes recommended therapeutic dosage of medicament. The therapeutic effect of transfer factor rests especially on normalisation of acceptor's immune system normalisation.