Clinical Drug Investigation

, Volume 26, Issue 4, pp 175–183 | Cite as

Closer to an ‘Ideal Inhaler’ with the Easyhaler®

An Innovative Dry Powder Inhaler
  • Henry Chrystyn
Review Article


The characteristics of an ideal inhaler are based around the design and formulation of the device, patient use and the clinical effect, together with concordance and patient preference. To ensure consistent drug delivery to the lungs, with regular adherence to the prescribed dosage regimen, it is essential that all these characteristics simultaneously interact to provide smooth and sustained therapeutic control affected only by the clinical status of the patient. The literature highlights that dose emission from an Easyhaler® is fairly consistent irrespective of the inhalation technique used by patients of all age groups. Clinical studies have shown equivalence of this device to those frequently prescribed and that it is preferred by many patients. Although further research is required into the development of inhalation devices, the literature describing the Easyhaler® dry powder inhaler indicates how an inhaler can closely meet the criteria for an ideal inhaler.


Salbutamol Budesonide Terbutaline Formoterol Lung Deposition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Prof. Chrystyn has been a consultant to and received grants to attend conferences and educational meetings from numerous companies in the Pharmaceutical Industry that market inhaled products including Ranbaxy (UK) Ltd. Prof. Chrystyn’s research group has also received funds from many of these pharmaceutical companies to carry out research. Prof. Chrystyn has no personal shares with any pharmaceutical company. He was assisted in writing this paper by Joseph Delahunty of Sante Communications [on behalf of Ranbaxy (UK) Ltd].


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© Adis Data Information BV 2006

Authors and Affiliations

  1. 1.School of Pharmacy and Institute of Pharmaceutical InnovationUniversity of BradfordWest Yorkshire, BradfordUK

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