What are antibiotics?

antibiotics are medicines that fight bacterial infection in people and animals. They work by killing the bacteria or by making it hard for the bacteria to grow and multiply.

Antibiotics can be taken in different ways:

  • Orally (by mouth). This could be pills, capsules, or liquids.
  • Topically. This might be a cream, spray, or ointment that you put on your skin. It could also be an eye or ear drops.

Antibiotic resistance happens when the bacteria change and become able to resist the effects of an antibiotic. This means that the bacteria are not killed and continue to grow. Today, antibiotics are still powerful, life-saving medications for people with certain serious infections. They can also prevent less-serious infections from becoming serious. Antibiotics begin to work right after you start taking them. However, you might not feel better for two to three days. The first beta-lactam antibiotic, penicillin, was discovered by accident. It was growing from a blob of mold on a petri dish. Scientists found that a certain type of fungus naturally produced penicillin.

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