cough and cold for 2 days should be treated with cough suppressent and decongestant like T minic as in this case it is acute in onset. In cough which is prolonged and are productive / wet, mucolytics i.e mucus lysis or mucus dissolvers are used. it thins out the secretions/ mucus production and reduces symptoms of wet cough only. however cough and cold of acute onset usually causes thin watery secretions which need not to be made further thin in this case antisecretory and decongestent will work well not mucolite so please use T minic