The present trial will include subjects with diagnosed asthma. The trial involves a total of 11 visits (Visit 1-2 are screening visits, visit 3 randomisation visit, visits 4-10 treatment visits and visit 11 follow-up visit).
The subjects will be monitored by medically qualified staff every second week at clinic visits, where the reduction of their background controller medication will be reduced, if their asthma is controlled.
Between visits to the clinic the subjects have to complete a diary.
