A composition for the treatment of inflammatory diseases, particularly of the skin, contains 0,01 - 20 wt % of boswellic acids weight in the form of extract or isolate from Boswellia family plants (Burseraceae) or the salts of these acids and 0,001 - 30 wt % of cannabidiol. Cannabidiol can be in the form of extract or isolate from Cannabis sativa family plant or can be of synthetic origin. The extracts containing boswellic acids or their salts and cannabidiol can be dissolved in lipotropic solvent selected from a group consisting of triglycerides, hydrocarbons, alcohols, ketones, esters or ethers or they can be dissolved in the oil from Cannabis sativa seeds or they can be dissolved in hydrophilic solvent selected from the group consisting of aliphatic polar alcohols or their mixtures with water.
