The use of inhaled medicines for the management of asthma is common and is the preferred method of treatment (NICE, 2000a). It is recommended that bronchodilating drugs, such as beta 2-agonists, which provide symptom relief, and anti-inflammatory drugs, such as corticosteroids, are administered by inhalation (NICE 2000a). However, the number of devices available can leave the practitioner and the patient confused about which is the most appropriate inhaler. Guidance from the National Institute for Clinical Excellence states that: 'It is important to ensure that an inhaler device delivers the drugs to the airways consistently and in the appropriate quantity' (NICE, 2000a).
