Comparative Pharmacology
Head-to-head clinical analysis: POLYSPORIN versus SODIUM SULAMYD.
Peer-Reviewed Evidence
Head-to-head clinical analysis: POLYSPORIN versus SODIUM SULAMYD.
POLYSPORIN vs SODIUM SULAMYD
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
Sodium sulfacetamide is a sulfonamide antibiotic that inhibits bacterial dihydropteroate synthase, blocking folate synthesis.
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.
1-2 drops of 10% or 15% solution into affected eye(s) every 2-3 hours initially, tapered as infection resolves; ophthalmic ointment: apply 0.5-inch ribbon into conjunctival sac every 3-4 hours and at bedtime.
None Documented
None Documented
Polymyxin B: 6–7 hours (impaired renal function: prolonged). Bacitracin: 1.5 hours (topical; not systemically absorbed).
7-13 hours (prolonged in renal impairment; in anuria up to 22-50 hours)
Polysporin (polymyxin B/bacitracin) ophthalmic/otic/topical: Minimal systemic absorption. Renal elimination for absorbed fraction: <1% of dose.
Renal excretion of unchanged drug (approximately 70-100%) via glomerular filtration and tubular secretion; minor biliary/fecal elimination (<5%)
Category C
Category C
Topical Antibiotic
Topical Antibiotic