Euphorbium compositum nasal drops stimulate the mucosal functions, their action being directed especially towards the nose and paranasal sinuses, having a regulatory effect on the widest variety of diseases of the mucosa of the sinuses, including acute and allergic coryza (hay fever). Avoiding the otherwise usual deturgescence of the mucosa, and without reactive hyperaemia with the consequent constriction of the respiratory tract, the nasal mucous membrane alone is cleansed from crusts and secretions by the solvent (physiological salt solution). Irksome desiccation is avoided, free respiration ensured and the unpleasant frontal pressure dispelled. In addition, the administration of Euphorbium compositum nasal drops over a fairly long period does not bring about a decrease in their action, but on the contrary, this is increased with time.