http://www.bbc.com/news/health-40520125
Citando:
"Coughs or bronchitis can take up to three weeks to clear on their own, but antibiotics reduce that by only one to two days, it says.
Prof Paul Cosford, medical director at PHE, told the BBC: "We don't often need antibiotics for common conditions.
"The majority of us will get infections from time to time and will recover because of our own immunity."
He said patients should not go to their doctor "expecting an antibiotic".
Instead, for infections that our body can handle, the advice is to:
have plenty of restuse pain relief such as paracetamoldrink plenty of fluids
Prof Cosford said: "A doctor will be able to tell you when an antibiotic is really necessary."