Thank you for writing on health care magic. I do understand you concern. Your father has been with pneumonia and suffers from COPD and 10 % of his lung capacity is low. By these number and the liters of oxygen being used i presume your father is in stage four of COPD ( or D stage) which is the last stage. COPD is not e reversible disease and the lung function deteriorate with time passing and disease progression. The list of medication is broad but normally patients at these stage have to take these medication. He has taken all the necessary medication for COPD exacerbation. I see he takes amiodarone and digoxin for heart rhythm problem and diltiazem also which i suppose for high blood pressure. It s good that he takes omeprazole for reflux because at theses stage of disease most of the patients have reflux and also helps to heal the stomach from side effects of drugs being taken( for the most prednisone). diabetes has to be good controlled because a bad controlled diabetes lowers the immunity and predisposes to infection and of course a better control makes him feel well and helps him not to get to early the complications of diabetes. The dosage of drugs seems ok. I would suggest to take some drugs with inhalation to help him feel better, you have to use corticosteroids with inhalation( symbicort for example), and long acting beta agonist , and salbutamol. These medications have to be decided by your pulmonary physician. Regarding your question about the possible treatment for pneumonia generally these kind of patients has to be treated with a combination therapy of a cephalosporins 3 grade or more ( ceftriaxone 1 gram twice per day for 7 days or cefepime for example) in combination with a macrolide ( azithromicin 250 mg for 7 days) Don t hesitate to post if you have any other question Wish you good health