Sultamicillin

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Sultamicillin
Clinical data
AHFS/Drugs.comInternational Drug Names
Routes of
administration
Oral
ATC code
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E number{{#property:P628}}
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Chemical and physical data
FormulaC25H30N4O9S2
Molar mass594.659 g/mol
3D model (JSmol)
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Sultamicillin is an oral form of the antibiotic combination (codrug or mutual prodrug) ampicillin/sulbactam. It contains esterified ampicillin and sulbactam and is marketed under a number of trade names, including Saltum from Morepen Lab and Unasyn from Pfizer.

The pharmacokinetic properties of sultamicillin are improved compared to a combination of ampicillin and sulbactam. Sultamicillin increases the absorption and decreases the chances of diarrhea and dysentery. The inclusion of sulbactam extends ampicillin's spectrum of action to beta-lactamase producing strains of bacteria. Oral sulbactam with parenteral form provides a regimen of continuous sulbactam therapy throughout the treatment, resulting in better clinical results.

Chemical evaluation

Sultamicillin is a mutual prodrug of ampicillin and sulbactam. Ampicillin, a semi-synthetic orally active broad spectrum antibiotic, is linked via a methylene group with a beta-lactamase inhibitor. Sultamicillin is chemically oxymethyl penicillinate sulfone ester of ampicillin.

Mechanism of action

After absorption, sultamicillin releases ampicillin and sulbactam into the system, so all the antibacterial efficacy of sultamicillin is due to ampicillin and sulbactam. Ampicillin exerts antibacterial activity against sensitive organisms by inhibiting biosynthesis of cell wall mucopeptide where as sulbactam irreversibly inhibits most important beta-lactamases that occur in resistant strains.

Indications

Indications for sultamicillin include:

References