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  1. Penicillin - Wikipedia

    Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens.

  2. Penicillin: Types, Uses & Side Effects - Cleveland Clinic

    Penicillin is a group of antibiotics (medications used to treat bacterial infections) that work in a specific way to destroy bacteria in your body. Types of penicillin and drugs closely related to …

  3. Penicillin | Discovery, History, Uses, Types, Side Effects, & Facts ...

    Oct 1, 2025 · Penicillin, antibiotic derived from Penicillium mold, one of the first antibiotics to be discovered.

  4. List of Common Penicillins + Uses & Side Effects - Drugs.com

    Apr 11, 2023 · Penicillins are a type of antibiotic derived from Penicillium fungi. An antibiotic is a type of medicine that inhibits the growth of, or kills, bacteria. Penicillin G (also called …

  5. What Is Penicillin Used For? - Verywell Health

    Oct 14, 2025 · Penicillin is a type of antibiotic that treats bacterial infections like pneumonia and strep throat. Some bacteria have become resistant to penicillin, making the drug less effective. …

  6. What Is Penicillin Used For? Antibiotic Types, Side ... - MedicineNet

    Penicillins are antibiotics used to treat bacterial infections that are derived from the antibiotic penicillin. Penicillin antibiotics stop bacteria from multiplying by preventing bacteria from …

  7. Penicillin: Uses, Side Effects, Interactions, Pictures ... - WebMD

    Dec 15, 2024 · Overview: Penicillin is an antibiotic that is used to treat bacterial infections. It kills certain types of bacteria by blocking their ability to create their cell wall. The most common side...

  8. Penicillin - StatPearls - NCBI Bookshelf

    Penicillin is effective against infections caused by gram-positive cocci, gram-positive rods, most anaerobes, and gram-negative cocci, and it stands as a cornerstone in the management and …

  9. Penicillins - Infections - MSD Manual Consumer Version

    Penicillins are used to treat infections caused by gram-positive bacteria (such as streptococcal infections) and some gram-negative bacteria (such as meningococcal infections). Most …

  10. Penicillin: Function, history, and resistance - Medical News Today

    Jul 30, 2018 · 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. These drugs have saved millions of …