Product Information

Registration Status: Active

ZEPILEN POWDER FOR INJECTION 1G/VIAL is approved to be sold in Singapore with effective from 2013-01-31. It is marketed by MEDOCHEMIE SINGAPORE PTE LTD, with the registration number of SIN14304P.

This product contains Cefazolin 1000mg in the form of INJECTION, POWDER, FOR SOLUTION. It is approved for INTRAVENOUS, INTRAMUSCULAR use.

This product is manufactured by Medochemie Ltd - Factory C in VIETNAM SOC REP OF, andMEDOCHEMIE (FAR EAST) LTD. in CYPRUS.

It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.



A semisynthetic cephalosporin analog with broad-spectrum antibiotic action due to inhibition of bacterial cell wall synthesis. It attains high serum levels and is excreted quickly via the urine.


Mainly used to treat bacterial infections of the skin. It can also be used to treat moderately severe bacterial infections involving the lung, bone, joint, stomach, blood, heart valve, and urinary tract. It is clinically effective against infections caused by staphylococci and streptococci species of Gram positive bacteria. May be used for surgical prophylaxis; if required metronidazole may be added to cover B. fragilis.

Mechanism of Action

In vitro tests demonstrate that the bactericidal action of cephalosporins results from inhibition of cell wall synthesis. By binding to specific penicillin-binding proteins (PBPs) located inside the bacterial cell wall, it inhibits the third and last stage of bacterial cell wall synthesis. Cell lysis is then mediated by bacterial cell wall autolytic enzymes such as autolysins.


Not absorbed from GI tract. Must be administered parenterally. Peak serum concentrations attained 1-2 hours post intramuscular injection.
Not metabolized.

Active Ingredient/Synonyms

(6R,7R)-3-{[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanyl]methyl}-8-oxo-7-[(1H-tetrazol-1-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid | Cefamezin | Cefazolina | Cefazoline | Cefazolinum | Cephamezine | Cephazolidin | Cephazolin | Cephazoline | CEZ | Cefazolin |

Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.


  1. Health Science Authority of Singapore - Reclassified POM
  2. Drugbank