My mother age is 56 yrs she is having dry cough for last ten days earlier coughing was more in night than day time and nasal blocked in night only. Presently coughing is similar in day as nyt and nasal are blocked , thin muscas coming with coughing now. I gave her ascoril LS dry cough syrup since yesterday and with that steam n gargle, ginger tea but she feels that due to overheat its not getting fine. Please suggest