We queried by questionnaire the outpatients who were taking inhalant solutions were prepared in our hospital about how they were using these solutions. As the result, we found that it was generally difficult for a patient to handle a nebulizer hygienically. Accordingly, we believe that it is necessary to research the stability of the constituent as well as the microbial contamination after the prepared inhalants are handed to the patients. As the conclusion of ourresearch, we plan to prepare a leaflet that demonstrates how to handle prepared inhalant solutions correctly.