My daughter is 2 yrs and 9 months old and she is suffering from frequent cold and cough. Everytime I visit a doctor, they prescribe medicines. I use them but see not much relief. I used medicines like Alerid, Maxtra, Ascoril LS, Ascoril Child Flux, Bronchux, Trixylix in the last 2 months, but haven t seen any improvement. Please suggest