Comparative Pharmacology
Head-to-head clinical analysis: CENTANY versus POLYSPORIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CENTANY versus POLYSPORIN.
CENTANY vs POLYSPORIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Mupirocin binds to isoleucyl-tRNA synthetase, inhibiting bacterial protein synthesis.
Polysporin is a combination of polymyxin B and bacitracin. Polymyxin B disrupts bacterial cell membrane by binding to lipopolysaccharides, increasing permeability. Bacitracin inhibits bacterial cell wall synthesis by interfering with dephosphorylation of the lipid carrier in peptidoglycan synthesis.
Apply a thin layer to affected area twice daily for 10 days. For perioral dermatitis, apply once daily.
Apply a thin layer topically to the affected area 1 to 3 times daily. If using the ointment, cover with a sterile bandage if desired.
None Documented
None Documented
8-10 minutes in serum; prolonged to 15-20 minutes in patients with renal impairment. Clinical context: Rapidly cleared, infrequent dosing intervals (e.g., every 20 minutes during procedure).
Polymyxin B: 6–7 hours (impaired renal function: prolonged). Bacitracin: 1.5 hours (topical; not systemically absorbed).
Primarily excreted unchanged in urine via glomerular filtration and tubular secretion (85-90% renal); minor biliary/fecal elimination (<5%).
Polysporin (polymyxin B/bacitracin) ophthalmic/otic/topical: Minimal systemic absorption. Renal elimination for absorbed fraction: <1% of dose.
Category C
Category C
Topical Antibiotic
Topical Antibiotic