use with No.3 capsule is a device that delivers medications to the lungs in the form of dry powder at inhalation airflow only >20L/min.other inhalers like TURBUHALER’s inhalation airflow must >60L/min.
Advantages of using DPI:
1)There is no gastrointestinal degradation.
2)No liver first pass effect.
3)The inhalation medication will directly into the lung, works quickly, with smaller side effects.