###Human: Is it advisable to use Z-pack for fever, mucus filled coughs with runny nose? ###Assistant: Hi. I can understand your concern. The possibility of respiratory tract infection is more likely. You should definitely take Z pack, no need to worry about this. Along with Z pack also, do warm water gargles and steam inhalation 4 to 5 times a day. If not improving in five days, get done chest X-ray. Please let me know if you have chest pain, breathlessness or wheezing.