Dry powder inhalation using a DPI device (dry powder inhaler) is becoming more and more important for patient care in view of the worldwide increase in lung and respiratory diseases. The need for therapeutics for bronchial asthma and COPD (chronic obstructive pulmonary disease), for example, is also rising worldwide. Many of the therapies need to be used by patients for life, which underscores the need to make DPI cost-effectively available and easy for patients to use.