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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Mezlocillin is a ureidopenicillin which is active against certain ampicillin resistant bacteria. It is, however, inactivated by penicillinases.


  • gram positive and negative infections, including enteric bacilli. Antipseudomonal activity.


  • history of renal impairment and allergy


  • penicillin hypersensitivity.


  • see 'penicillins (general side-effects)'

Routes of administration:-

  • i.m. injection
  • i.v. injection
  • i.v. infusion

ROA: im injection and iv infusion and injection.

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