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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 · Penicillins are used for treating bacterial infections. They don't treat viral, fungal, or parasitic infections. The drugs are generally active against gram-positive bacteria, a group of …

  6. 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...

  7. 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 …

  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. The Role of Penicillin Antibiotics in Fighting Bacterial Infections

    Dec 7, 2023 · Penicillin antibiotics have played a vital role in the history of medicine, revolutionizing the treatment of bacterial infections. Discovered by Alexander Fleming in 1928, …

  10. 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 …