Pivmecillinam

Pivmecillinam (INN) or amdinocillin pivoxil (USAN, trade names Selexid, Penomax and Coactabs) is an orally active prodrug of mecillinam, an extended-spectrum penicillin antibiotic. Pivmecillinam is the pivaloyloxymethyl ester of mecillinam.

Pivmecillinam
Clinical data
AHFS/Drugs.comMicromedex Detailed Consumer Information
Pregnancy
category

  • Appears safe in pregnancy
Routes of
administration		Oral
ATC code
Legal status
Legal status
  • In general: ℞ (Prescription only)
Pharmacokinetic data
BioavailabilityLow
Protein binding5 to 10% (as mecillinam)
MetabolismPivmecillinam is hydrolyzed to mecillinam
Elimination half-life1 to 3 hours
ExcretionRenal and biliary, mostly as mecillinam
Identifiers
  • 2,2-dimethylpropanoyloxymethyl (2S,5R,6R)-6-[(azepan-1-ylmethylene)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.046.600
Chemical and physical data
FormulaC21H33N3O5S
Molar mass439.57 g·mol−1
3D model (JSmol)
  • CC1(C(N2C(S1)C(C2=O)N=CN3CCCCCC3)C(=O)OCOC(=O)C(C)(C)C)C
 NY (what is this?)  (verify)

Pivmecillinam is only considered to be active against Gram-negative bacteria, and is used primarily in the treatment of lower urinary tract infections. In the Nordic countries, it has been widely used in that indication since the 1970s. It has been proposed as the first-line drug of choice for empirical treatment of acute cystitis. It has also been used to treat paratyphoid fever and shigellosis.

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