Abstract
Echinacea is a widely used herbal remedy for the prevention and treatment of respiratory upper tract infections due to their immunostimulant properties. Recently, studies on the molecular mode of action of the main lipophilic constituents, the alkamides, have been carried out [1,2]. Due to the high affinity of these components for the buccal membrane, the aim of this research was to prepare drops containing dodeca-2E,4E,8Z,10E/Z-tetraenoic acid isobutylamides, the major alkamides, in different concentrations (0.07, 0.21 and 0.9mg).
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