FIELD: medicine, more particularly medicinal agent. SUBSTANCE: present invention describes methods of preparing furostanol glycosides from vegetable stock having antioxidant activity as compared with structural analogues having identical biological properties, essence of the claimed method is as follows; extraction is carried out by using boiling water, aqueous extract is thoroughly treated with butyl alcohol, butanol extracts are concentrated, residue is washed with acetone and dried. Powder is dissolved in water and subjected to gel-filtration on sephadex G-25. Eluent is distilled water. EFFECT: more efficient preparation method.
