The aim of this study is to compare two licensed asthma inhalers and to then evaluate the safety of reducing treatment when patient's asthma is in control. The inhalers used in this study are the Seretide® 250 Evohaler®, which is widely used in UK, and a recently licensed inhaler called Flutiform®. National guidelines recommend that asthma medication should be increased when patients are experiencing worsening of their asthma, and reduced when asthma is in control. However, it is likely that in daily clinical practice some patients are over-treated. It is therefore necessary to conduct more studies which demonstrate that reducing treatment dosage can be done safely.

This study has two phases. In the first phase the investigators aim to recruit 224 patients through approximately 40 clinics in the UK and Ireland. One third of these patients will be selected in random to use the high dosage Seretide® 250 Evohaler® and two thirds will use high dose Flutiform® 250 inhaler for 12 weeks. At the end of phase 1 the investigators will compare how well asthma was controlled between the two groups.

After phase 1 those patients who used Flutiform and did not have any problems with their asthma can participate in phase 2. In phase 2 half of the patients will stay on high dosage Flutiform 250 and half will be switched to the medium dosage Flutiform 125 inhaler. At the end of phase 2 the investigators will compare asthma control between the two groups.

This study will be conducted by Research in Real Life Ltd (Cambridge, UK) with partial funding from Napp Pharmaceuticals Ltd. The estimated total duration of the study is 18 months and each patient will spend a maximum of 6 months in the study.

Inclusion Criteria:

• Able and willing to provide written informed consent and to comply with the study protocol.

• Current diagnosis of asthma (as evidenced by appropriate diagnostic code)

• Received Seretide® 250 Evohaler® 2 puffs twice daily for the last 6 months

• No asthma exacerbation* in last 3 months

• ≤2 exacerbations* in last 12 months

• No errors in device use after training (during baseline visit)

• Women of childbearing potential (not surgically sterile or 2 years postmenopausal) must use a medically accepted method of contraception and must agree to continue use of this method for the duration of the study and for 30 days after discontinuation of study drug. Acceptable methods of contraception include intrauterine device (IUD) known to have a failure rate of less than 1% per year, steroidal contraceptive (oral, implanted, transdermal, or injected), barrier method with spermicide, abstinence, and partner vasectomy.

  • Exacerbation defined as acute course of oral steroids, emergency room attendance and/or hospitalisation for asthma

Exclusion Criteria:

• Other chronic respiratory disease than asthma (e.g. Chronic Obstructive Pulmonary Disease (COPD))
• Uncontrolled asthma (GINA criteria)
• The patient has used a clinical trial investigational drug within the last year before the screening visit
• Hypersensitivity to Flutiform®, its component Formoterol or its excipients
• Pregnant subjects

Individual participant data will not be publically released as this was not covered by patient consent. Patients have consented for anonymised data to be used for future medical research by Research in Real-Life.