Hiii Sir, My Baby Is 5 Month Old She Is

Hiii sir, My baby is 5 month old she is suffering from recurrent cough nad cold last 1 month Dr advised to use same medicine . But
not cure cough and cold . It doesn t come out.and my baby weight loss day by day. So please advise me to better way.
Baby use medicine name..

1..Amoxol sl
2..Ambrodil
Today Dr advised this one
3..Monticope Suspension