Which medications in the drug class Penicillins, Extended-Spectrum are used in the treatment of Cellulitis?

Updated: Jun 14, 2019
  • Author: Thomas E Herchline, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Penicillins, Extended-Spectrum

Extended-spectrum, or fourth-generation, penicillins are semisynthetic modifications of natural penicillin that have an extended spectrum of activity, particularly against gram-negative bacteria such as Pseudomonas, Enterobacter, Proteus, and Klebsiella species.

Piperacillin and tazobactam (Zosyn)

Piperacillin-tazobactam is a semisynthetic penicillin with an increased spectrum against gram-negative bacilli. The addition of tazobactam inhibits beta-lactamases produced by bacteria. It is a broad-spectrum drug for gram-positive, gram-negative, and anaerobic bacteria; it covers most gram-positive organisms except MRSA.

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