To investigate the problems associated with the use of the Flutide® inhaler, its clinical use by patients was evaluated. Twenty-one of 33 patients who were examined in this study were found to have made some type of mistake when using the Flutide® inhaler. Elderly patients had more mistakes than younger patients, and males had a higher frequency of mistakes than females. Some subjects made mistakes during self-inhalation, even though they had been able to correctly use the inhaler on initial consultation. We thus consider that comprehensive initial consultations demonstrating the correct use of this inhaler are necessary. In addition, follow-up consultations are also required to ensure that the patients are indeed correctly using this device, although it is reported to be easier for patients to use the powder-type preparations than metered-dose inhalers. tended to make