My Baby Is 1.1 Year Old And Has Started Getting

My baby is 1.1 year old and has started getting frequent colds and cough. It is a cold that she usually starts which then progresses to a cough. This time the cough has been troubling her for almost a month now. The paediatrician has advised deplomont after having a course of oral medicines like ambrodil s, pulmoclear and an antibiotic named macpod. We also had her on both asthalin and budecort nebs before the course of deplomont was suggested. I am hesitant to start with deplomont considering she is very small. Is this truly required ? Can I continue treating her condition by nebulization ? Kindly advise.