Does a cold or the flu need an antibiotic?
No. The common cold and the flu (influenza) are caused by viruses, not by bacteria.. Antibiotics do not work against viruses. Normal cold symptoms include sore throat, fever, cough, and/or a runny nose. A runny nose often starts out with clear drainage and then turns to a green or yellow color. This is a good sign that the body is fighting the virus. If your runny nose is not getting better after 10-14 days, please talk to your healthcare provider.