The expectorant effect of the thoracic elixir is due to the action of its constituents.
- Licorice root extract has some anti-inflammatory and expectorant properties that are related to the content in the roots of glycyrrhizin, stimulating the activity of ciliated epithelium in the trachea and bronchi, and also enhancing the secretory function of the mucous membranes of the upper respiratory tract;
- Anise oil has an expectorant effect due to the antholum content in the oil, which promotes reflex excitation of respiration, increased activity of the ciliary epithelium of the respiratory tract and increased secretion of the mucous membranes of the larynx, trachea, bronchi;
- ammonia has an irritating effect that leads to the excitation of the endings of the sensory nerves of the upper respiratory tract and reflex stimulation of the respiratory center.