Unrefined Salmon Oil as Dietary Supplement in Patient With Chronic Obstructive Pulmonary Disease

Inclusion Criteria: * Diagnosed and under treatment for COPD with regular maintenance therapy. * Postbronchodilator FEV1-FVC ratio less than 0.70 the last 3 months. * FEV1\<90%. * Current smoker or ex-smoker at least 10 pack-years. * COPD Assessment Test score level (CAT) ≥10. * Patients with overlapping COPD and asthma disease may be included. * Speaks fluent Norwegian. * Signed informed consent and expected cooperation of the patients for the treatment and follow up must be obtained and documented according to ICH GCP, and national/local regulation. Exclusion Criteria: * Evidence and/or diagnose of clinically significant uncontrolled non-pulmonary disease. * Myocardial infarction or stroke within the last 12 months, angina pectoralis diagnosed \< 3 months or unstable angina * Stage 4 of Congestive Heart Failure according to The New York Heart Association (NYHA) (severe heart failure with poor outcome and decreased survival rate). * Cancer diagnosed within the last 12 months (except basal cell carcinoma of the skin), and/or ongoing active cancer therapy. * Severe liver disease * Severe autoimmune diseases requiring immunosuppressant treatment. * Pulmonary fibrosis, interstitial lung disease, pulmonary hypertension, sarcoidosis, or significant bronchiectasis. * Treatment with oral steroid \< 1 month prior to baseline visit. * Oral/intravenous antibiotics \< 1 month prior to baseline visit. * Immunosuppressant therapy such as Cyclosporine and Azathioprine. * Cons…