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The article describes qualitative and quantitive analysis of tincture for improvement of blood circulation. Flavonoids have been qualitatively determined by methods of thin-layer chromatography, high-pressure liquid chromatography and color reaction with magnesium powder and concentrated hydrochloric acid. Ferments were identified with ferric ammonium sulphate solution; glycosides – with dimethylaminobenzaldehyde solution in sulphur acid; saponin – with lead subacetate solution; reductive materials – with silver nitrate ammoniacal solution; albumen – with ninhydrin solution; and caffeic acid – by method of thin-layer chromatography. An optimal spectrophotometrical method for determining the quantity of quercetin was applied. The refractive index, relative density, loss of drying and ethanol concentration were determined according to European Pharmacopoeia Requirements.

The article deals with the production of the tincture of Ginkgo leaves while selecting extractant, the size of particless in a raw material, and the method of extraction. The optimal concentration of the extract was established by experiment and was the following: ethanol of 70 percent (V/V), the particles size 2–3 mm, the production method percolation, and the flow speed of tincture 0.5 ml/min. The tinctura was analyzed at determination of the sum of flavonoids in terms of quercetin, dry residue, the concentration of ethanol, density, refraction index, heavy metals and microbe pollution. The stability of the tincture and its expiry date were fixed.