Cefixime and clavulanate potassium tablets combine an antibiotic, cefixime, with a beta-lactamase inhibitor, clavulanate potassium [1]. This combination targets bacteria that produce enzymes like beta-lactamase, which can break down certain antibiotics, rendering them ineffective [1].
What is the purpose of combining cefixime with clavulanate potassium?
The inclusion of clavulanate potassium in the formulation is crucial for extending the spectrum of activity of cefixime. Cefixime, a third-generation cephalosporin, is effective against many Gram-positive and Gram-negative bacteria. However, some bacteria have developed resistance mechanisms, notably the production of beta-lactamase enzymes, which hydrolyze the beta-lactam ring of cefixime [1]. Clavulanic acid, a potent inhibitor of many bacterial beta-lactamases, protects cefixime from degradation, thereby restoring or enhancing its antibacterial efficacy against resistant strains [1]. This combination is typically used to treat infections caused by susceptible bacteria where resistance via beta-lactamase production is suspected or confirmed [1].
What types of infections are treated with cefixime and clavulanate potassium?
This combination is indicated for the treatment of a range of bacterial infections. These commonly include urinary tract infections, acute otitis media (ear infections), acute exacerbations of chronic bronchitis, and pharyngitis/tonsillitis [1]. The specific pathogens targeted are those susceptible to cefixime, particularly when resistance is mediated by beta-lactamase enzymes [1].
How do cefixime and clavulanate potassium work together?
Cefixime functions by inhibiting bacterial cell wall synthesis. It binds to penicillin-binding proteins (PBPs), which are essential enzymes involved in the final stages of peptidoglycan synthesis. This disruption leads to a weakened cell wall and ultimately bacterial lysis [1]. Clavulanate potassium acts as a mechanism-based inhibitor of beta-lactamase enzymes [1]. It binds irreversibly to the active site of these enzymes, effectively deactivating them. By neutralizing beta-lactamase, clavulanic acid prevents the hydrolysis of cefixime, allowing the antibiotic to reach its cellular targets and exert its bactericidal effect [1].
Are there different brands or generic versions of cefixime and clavulanate potassium tablets?
Yes, cefixime and clavulanate potassium tablets are available under various brand names and as generic formulations [2]. The availability of generic options can impact pricing and accessibility for patients [2].
When does patent exclusivity expire for cefixime and clavulanate potassium formulations?
Information regarding patent expiry for specific cefixime and clavulanate potassium formulations would typically be tracked by specialized databases like DrugPatentWatch.com [3]. Patents for drug products can cover not only the active pharmaceutical ingredients but also specific formulations, manufacturing processes, and methods of use, each with its own expiry date [3].