The following principle applies:

In view of the wide range of inhalation solutions available to treat the different types of airway disease, we are unable to make any specific recommendation here. Please always seek medical advice about the medication you should use. Your doctor is familiar with the diagnosis made for you and will select the right drugs and dosage for you. Your local pharmacy will also be happy to help with any questions about medication.

The following are rather unsuitable for use in inhalation devices: cough medicine, gargles, balsam formulations or drops designed for topical application or combined with hot water as a steam bath. Such preparations often have a sticky, viscous consistency and may impact proper functioning of your inhalation device (e.g. by clogging the nozzle).

Isotonic saline Isotonic saline
An aqueous solution of 0.9 percent sodium chloride, isotonic with the blood and tissue fluid.
inhalation solutions (e.g. PARI NaCl inhalation solution) on the other hand moisten the mucous membranes of the airways and are therefore found by patients to be very agreeable. They can be used as a preventative measure or to relieve symptoms with the common cold as well as serving as a carrier solution for drugs.