Abstract
The new ultrasonic mesh nebulizer “Micro A-I-R” (NE-U22 ; OMRON Co., Tokyo, Japan) has recently been marketed, and we investigated its effect on the stability of several drugs. Stability tests showed that the ratios of the drugs remained above 95% after ultrasonic nebulization with the new nebulizer. The new ultrasonic nebulizer produces smaller particle aerosols and can effectively deliver medication in suspension. The residual volume after nebulization is small, and the nebulizer is compact and light, and can be operated with dry batteries. These characteristics make it portable and more convenient for patient use. We would also like to emphasize that suitable nebulizer therapy can be provided to patients, including infants and the elderly, if devices and drug formulations continue to be improved.