The fruits of midland hawthorn (Cratae gusoxyacantha L.), as well as leaves and flowers have a complex composition. A water-soluble polysaccharide complex, flavonoids and saponins, and other biologically active compounds were revealed in them. Consequently, preparations made from the vegetable material of hawthorn have a high biological activity. A liquid extract of fruits and a tincture of hawthorn flowers, are widely used in medicine. These drugs are used for cardiovascular diseases, have a sedative and hypotensive effect.