Comparative Pharmacology
Head-to-head clinical analysis: MAXITROL versus PREDNISOLONE EYE DROPS.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MAXITROL versus PREDNISOLONE EYE DROPS.
MAXITROL vs Prednisolone Eye Drops
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Maxitrol is a combination of dexamethasone (corticosteroid), neomycin (aminoglycoside antibiotic), and polymyxin B (polymyxin antibiotic). Dexamethasone suppresses inflammation by inhibiting phospholipase A2, reducing prostaglandin and leukotriene synthesis. Neomycin binds to bacterial 30S ribosomal subunit, causing misreading of mRNA and inhibiting protein synthesis. Polymyxin B disrupts bacterial cell membrane integrity by binding to lipopolysaccharides.
Corticosteroid that binds to glucocorticoid receptors, modulating gene expression and suppressing inflammatory mediators such as prostaglandins and leukotrienes.
1-2 drops or 0.5-1 inch strip of ointment into the conjunctival sac every 4-6 hours; in severe cases, every 2-4 hours. Frequency may be reduced after improvement.
Instill 1-2 drops into the conjunctival sac of the affected eye(s) four times daily. In severe cases, dosing may be initiated with 1-2 drops every 1-2 hours and tapered upon improvement.
None Documented
None Documented
Neomycin: 2–3 h (topical) but prolonged in renal impairment. Polymyxin B: 6–7 h (topical). Dexamethasone: 3–4 h (topical). Clinical: systemic absorption minimal with intact epithelium; half-life may be prolonged with corneal abrasion or inflammation.
Plasma: 2-4 hours; tissue effects persist 18-36 hours. Clinically, duration of adrenal suppression may exceed plasma half-life.
Renal: neomycin 30–50%; polymyxin B <1%; dexamethasone <1%. Fecal: neomycin >50% (unabsorbed); polymyxin B >99% (unabsorbed); dexamethasone <5%. Biliary: negligible for all components.
Renal (primarily as metabolites): ~70% after oral dose; unchanged drug: <20%. Biliary/fecal: minor.
Category C
Category A/B
Ophthalmic Corticosteroid/Antibiotic Combination
Ophthalmic Corticosteroid