Dry powder inhalers for optimal drug delivery

Dry powder inhalers (DPIs) have been available for delivering drugs to the lungs for over 30 years. In the last decade there has been a big increase in DPI development, resulting partly from recognised limitations in other types of inhaler device. Many companies are developing DPIs for asthma and chronic obstructive pulmonary disease (COPD) therapy, and there is increasing recognition of the potential role of DPI systems for other therapies,...