Antibiotics are not the same as antivirals. Antibiotics are used to fight bacterial infections.1 Because the flu is caused by a virus and not a bacteria, antibiotics cannot target the source of the flu and will not help people get better.10
Antibiotics will not help ease your symptoms either.10 In fact, using antibiotics when they are not needed can do more harm than good. This is because bacteria can start building resistance to the antibiotic, which can weaken the antibiotic response to any future bacterial infections.1,2
So if you suspect you have the flu, remember that antibiotics will not have any effect.