Penicillins are a group of antibacterial drugs that attack a wide range of bacteria. They were the first drugs of this type that doctors used. The discovery and manufacture of penicillins have changed the face of medicine, as these drugs have saved millions of lives.

Penicillium fungi are the source of penicillin, which people can take orally or via injection.

People across the globe now widely use penicillins to treat infections and diseases.

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Fast facts on penicillin

  • Penicillins were the first antibiotic that doctors used.
  • There are several antibiotics in the penicillin class.
  • Experts credit Alexander Fleming with discovering penicillins.
  • Penicillin works by interfering with bacteria cell walls.
  • Less than 1 percent of people are dangerously allergic to penicillin.

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