Comparative Pharmacology
Head-to-head clinical analysis: EPINASTINE HYDROCHLORIDE versus KOVANAZE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: EPINASTINE HYDROCHLORIDE versus KOVANAZE.
EPINASTINE HYDROCHLORIDE vs KOVANAZE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Selective histamine H1-receptor antagonist. Inhibits histamine release from mast cells and basophils, and reduces chemotaxis and activation of eosinophils. Also suppresses cytokine production from T lymphocytes.
KOVANAZE (norepinephrine and phenylephrine) is a combination of two vasopressors: norepinephrine, an α1-adrenergic receptor agonist with β1-adrenergic activity, and phenylephrine, a selective α1-adrenergic receptor agonist. Both agents cause vasoconstriction and increase blood pressure via activation of α1-adrenergic receptors on vascular smooth muscle.
For allergic rhinitis and urticaria: 10 mg twice daily orally (20 mg/day). For ophthalmic use: 1 drop in affected eye(s) twice daily of 0.05% solution.
Intravenous bolus of 1 mg/kg over 10 minutes, followed by intravenous infusion of 0.02 mg/kg/min for 4 hours, then 0.01 mg/kg/min for 20 hours.
None Documented
None Documented
The terminal elimination half-life is approximately 5.7 to 9.2 hours in healthy adults. In elderly patients, the half-life may be prolonged due to reduced renal function. The half-life supports twice-daily dosing for most indications.
Terminal elimination half-life: approximately 7-9 hours following nasal administration; clinical significance: supports twice-daily dosing regimen
Renal excretion accounts for approximately 39% of the administered dose, with about 28% as unchanged drug and 11% as metabolites. Fecal excretion is minimal at approximately 10%. Biliary excretion is not a significant route. Overall, renal clearance is the primary elimination pathway.
Renal excretion of unchanged drug: ~20-30%; fecal/biliary elimination: minimal (<5%); remainder as metabolites
Category A/B
Category C
Antihistamine
Antihistamine + Corticosteroid Combination