<s>[INST] how does deriphyilin retard 150 help in lung fibrosis I am 58yrs old and weigh 73kg. I have been diagnoised more than 20yrs ago for systemic sclerosis with lung fibrosis and arthritis. I have cough 365 days of the year no tablets no cough syrups seem to help i was on steroids for a long time but that too doesnt help  I want this mucous formation in the lungs to stop  it causes discomfort i am not able to bring it out [/INST] Hi and thank you for asking.Deriphyllin is a combination of Theophyllin and Etophylline and is used for asthma and other respiratory diseases.According to the history your lung fibrosis is due to systemic sclerosis and arthritis. Deriphyllin can help in your breathing but not in the cough.For the cough you can try mucolotics as Trebon 600 once per day and drink a lot of water.The main treatment for the fibrosis in your situation is the treatment of the systemic sclerosis and arthritis  as the rhehumatologist advice.So good luckThank youDr.JolandaPulmonologist </s>