Hello Doctor, My sister has been having a cough for the past 4 days. The cough is worse at night and is associated with mucus and a runny nose. There's no fever. She was prescribed an antibiotic, a syrup containing ambroxol and guaifenesin, montelukast, and acebrophylline. I’d like to know if the antibiotic and syrup alone would be enough, or are montelukast and acebrophylline also necessary in her case? Thank you for your advice.