A prospective, open-label, non-interventional, multicentre study in adult patients with asthma or COPD who are treated with Salmeterol/fluticasone Easyhaler. During the study the Salmeterol/fluticasone Easyhaler will be used according to the Summary of Product Characteristics. Clinical effectiveness of the treatment will be evaluated with change in asthma or COPD symptoms during 12 weeks treatment.