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In the US, Mezlocillin is a member of the drug class antipseudomonal penicillins and is used to treat Cesarean Section, Gonococcal Infection - Uncomplicated, Surgical Prophylaxis and Urinary Tract Infection.



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Beta-lactam antibacterial: Penicillin with extended spectrum

Chemical Name

(2S,5R,6R)-3,3-Dimetyl-6-{(R)-2-[3-(metylsulfonyl)-2-oxo-1-imidazolidinecarboxamido]-2-phenylacetamido}-7-oxo-4-tia-1-azabicyclo[3.2.0]-heptane-2-carboxylic acid

Foreign Names

  • Mezlocillinum (Latin)
  • Mezlocillin (German)
  • Mezlocilline (French)
  • Mezlocilina (Spanish)

Generic Names

Brand Names

  • Baypen
    Bayer Schering, China
  • Han Guang (Mezlocillin and Sulbactam)
    General Sanyang Pharmaceutical Co Ltd, China
  • Jia Luo Tan (Mezlocillin and Sulbactam)
    Weiqida Pharmaceutical, China
  • Kai Wei Ke (Mezlocillin and Sulbactam)
    General Sanyang Pharmaceutical Co Ltd, China
  • Kailin (Mezlocillin and Sulbactam)
    Rui Yang Pharm, China
  • Li Yang
    Rui Yang Pharm, China
  • Meige
    General Sanyang Pharmaceutical Co Ltd, China
    Carinopharm, Germany
  • Nuomei
    Weikang Pharmaceutical, China
  • Yi Mei - Dongfang Pharm
    Shandong Dongfang Pharmaceutical Industries, China


BANBritish Approved Name
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.