FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to chemical-pharmaceutical industry and represents using a fatty acid derivative specified in (-)-7-[(2R,4aR,5R,7aR)-2-(1,1-difluoropentyl)-2-hydroxy-6-oxooctahydrocyclopenta[b]pyran-5-yl]heptanoic acid, (-)-7-{(2R,4aR,5R,7aR)-2-[(3S)-1,1-difluor-3-methylpentyl]-2-hydroxy-6-oxooctahydrocyclopenta[b]pyran-5-yl}heptanoic acid or (-)-7-[(1R,2R)-2-(4,4-difluor-3-oxooctyl)-5-oxocyclopentyl]heptanoic acid, or a functional derivative of any of them, for producing a pharmaceutical composition applicable for treating an oral mucosa inflammation induced by an antitumour agent in a mammal; an individual takes an antitumour agent specified in a group consisting of an alkylating agent, metabolic antagonist, antibiotic, herbal alkaloid, molecular-targeted drug, hormone, platinum complex, antisense factor, antibody and mRNA.
EFFECT: invention provides reducing toxic side effect of the antitumour agent.
7 cl, 2 ex
