Hello, I am taking deriphylline since 4 days as was having little irritation in throat since 7 days. Now having mild dry cough(can talk easily, sometimes occurs during the day) so should i continue taking dyriphilline, as it is not getting better? Also, these days cough is one of the symptoms of coronavirus, so as a precaution what medicine should i take to treat my cough. Other than cough not feeling any symptom.