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Chronic obstructive pulmonary disease (COPD) is the third leading cause of death worldwide and a major cause of morbidity in the UK. Patients with COPD are frequently prescribed inhalers which contain steroids or bronchodilators to help reduce symptoms. There are a number of different treatments available for patients with COPD, however some treatments that are of benefit to one group of patients may produce side effects in others. Some side effects can cause inflammation in the lungs which can reduce quality of life and drive the progression of the disease.

This trial wants to compare two different inhalers that are both already in use for treating COPD. The researchers believe that the two inhalers will have different effects on the bacteria that live in the lungs and inflammation in the lungs. If this is the case, it means that future treatment could be much more effective as doctors will be able to match the right inhaler to the right patient by measuring their levels of inflammation at the start.

Please tell us a little more about yourself to see whether you may be suitable for this study.

The researchers want to compare two different inhalers that are used in treating COPD.

1 . Are you aged 40 years or over?
2 . Do you live in Glasgow?
3 . Have you been diagnosed with COPD?
4 . Do you currently take an inhaled steroid?