Inhalation is already a very useful preventive measure. The mucous membranes are humidified in the process, which in turn supports the protective and self-cleansing process of the respiratory tract. This may already be implemented as a preventive measure as protection against colds and pulmonary disorders.
For preventive purposes inhalation or rinsing the nose with saline solutions (e.g. IsoFree®) is recommended.
To do so, isotonic inhalation solutions with a salt content of 0.9 % (e.g. IsoFree®) and hypertonic salt solutions with a salt content of 3 % and 6% (e.g. sodium chloride solution 3 % / 6%) are available. Isotonic salt solutions primarily humidify the respiratory tract - hypertonic salt solutions promote the natural protective function of the respiratory tract, enhancing secretion mobilization - the higher the salt content, the stronger the effect achieved.