FIELD: medicine, pharmacology, pharmacy. SUBSTANCE: invention relates to bilayer lipid preparation in polar solvent that involves 0.01-90 wt.-%, preferably 0.1-50 wt.-%, material forming a bilayer. The above mentioned material forming bilayer is galactolipid material from cereals containing at least 50% of digalactosyldiacylglycerides and remained part involves other polar lipids. Invention relates to also the pharmaceutical composition involving therapeutically active substance in mixture with the above mentioned bilayer preparation. EFFECT: enhanced resistance, chemical stability of preparations. 12 cl, 2 dwg, 26 ex
