Bacteria are germs that cause infections in people. Examples of infections caused by bacteria include infections of the skin, throat, lungs and urinary tract. Infections can by other types of germs such as viruses.
Antibiotics are medicines used to treat specific infections caused by bacteria.
They either kill bacteria or keep more bacteria from growing. Many types of antibiotics are available. Each works a little differently and acts on different bacteria. This is why you must have a prescription to buy antibiotics. Your doctor will decide which antibiotic will works best for your infection.