My 3.5 months baby has cough and phneumunia ..doctor give him antibiotice injection but he become so weak and thin how can i make him strong.doctor give foutzb vitamin

A. Cough and Cold should be treated only after a proper examination by a doctor as there may be some associated factor . As the first line of treatment you can give steam inhalation which would gbe helpful . Cough Syp should be given only after a prnoper evaltuation .