Comparative Pharmacology
Head-to-head clinical analysis: FML versus PRED FORTE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: FML versus PRED FORTE.
FML vs PRED FORTE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Agonist at glucocorticoid receptors, leading to inhibition of phospholipase A2 via annexin-1 induction, reducing prostaglandin and leukotriene synthesis; also suppresses cytokine production and inflammatory cell migration.
Corticosteroid that binds to glucocorticoid receptors, causing inhibition of phospholipase A2, arachidonic acid release, and synthesis of inflammatory mediators. Reduces inflammation by suppressing leukocyte infiltration and cytokine production.
Fluorometholone ophthalmic suspension 0.1%: Instill 1 drop into conjunctival sac 2-4 times daily. In severe conditions, may increase to 1 drop every hour initially.
1-2 drops in the conjunctival sac every 1-2 hours during the day and every 4 hours at night initially, then taper to every 4-8 hours as inflammation resolves. Severe cases may require hourly dosing.
None Documented
None Documented
The terminal elimination half-life of fluorometholone is approximately 1.5 hours in plasma. Clinically, this short half-life allows for multiple daily dosing; however, ocular administration results in sustained local effects due to corneal binding.
2-3 hours (terminal) after IV administration; for topical ophthalmic use, systemic half-life is similar but local ocular half-life is prolonged due to corneal reservoir.
FML (fluorometholone) is primarily metabolized in the liver, with metabolites excreted renally. Approximately 70-80% of the dose is eliminated in urine as metabolites, with less than 5% as unchanged drug. Fecal excretion accounts for about 10%.
Primarily hepatic metabolism; renal excretion of inactive metabolites accounts for approximately 80% of elimination, with biliary/fecal elimination <20%.
Category C
Category C
Ophthalmic Corticosteroid
Ophthalmic Corticosteroid