Hi, Thank you for your query. I am surprised that your daughter is receiving nebuliser and bronchodilator (Meptin) for cough and cold unless she has findings which are suggestive of asthma. Rhinathiol is to loosen the tenacious bronchial secretions and Zyrtec is an anti-allergic. I suggest that you discuss with your doctor and try to find if your daughter has wheezing suggestive of asthma for which the treatment seems to be appropriate. On the other hand, children of this age tend to get repeated upper respiratory tract infection for which a simple decongestant cough syrup and steam inhalation should suffice. You can help boost her immunity by giving her a good nutritious diet and avoid junk food. If she is being bottle fed then attention needs to be given for bottle hygiene. I hope I have answered your query to your satisfaction. Wishing your daughter an early recovery. Regards, RKK