Conversation: The conversation between human and AI assistant.
[|Human|] hi. my mum is having an irritating cough at night and sometimes when she is laying. Our doctor prescribed her deriphyllin retard 150..when i searched on it, i found out that it s a medicine that is used to treat particular asthma types.. i m wondering why the doctor prescribed this medicine. How does it going to help her? she is not a smoker..
[|AI|]  Hello, First, let me explain why your mothers cough aggravates when she lies down. When someone is having cough there is some amount of fluid inside the lungs and in the lying position the fluid trickles to the throat, irritates and so the irritating cough starts. Now so far as deriphyllin is concerned, it is a simple bronchodilator which dilates your airways and helps relieve coughing. So don't worry, the doctor has prescribed it right. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor.